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Forum: Pentax DSLR Discussion 04-21-2014, 05:21 AM  
Resurrecting Pentax firmware hacking
Posted By jcdoss
Replies: 765
Views: 299,059
I hope opening up this topic to public discourse has resulted in more donations than whining, because the whining is making me wish to ignore this thread.
Forum: Pentax DSLR Discussion 04-21-2014, 01:01 AM  
Resurrecting Pentax firmware hacking
Posted By patarok
Replies: 765
Views: 299,059
It seems to me that this discussion is sense and meaningless, like a discussion about what the Pentax FF should look like and what features it has got to have.
It is so damn clear, that everybody who owns this or that camera, would like to see shodan setting up the hack for it as next step in PHDK development...
If I wanted to, i could easily find arguments to leave out K-50, or K-500...
Besides that i want to ask myself, why words like "why waste effort dwelling with the past?" and "you want it to be available on something that people can buy new or used" appear in a post now, when not even one fundamental modification is running on any cam at the time writing.
I can buy a K-5II NEW if i want to now. Also i can order a brand new K-r every moment on amazon or ebay.
This could go on and on...
But , let me remind you:
Most of the people in this thread want to watch shodans progress. Please do not dilute it!
If you really want the camera that you own, to be the next on shodans list, you can go, buy the same body again and donate it to him.
I am sure he would be happy about that, and it would raise the chances, that your cam is next.
...
Forum: Pentax DSLR Discussion 03-02-2014, 01:31 PM  
Resurrecting Pentax firmware hacking
Posted By Shodan
Replies: 765
Views: 299,059
RE'ing the firmware decryption routine turned out to be harder than I thought. So instead I ripped out the original decryption assembly, recompiled it and ran it on my RaspberryPi. After a little fiddling with the endian-ness I've got the firmware that the actual camera uses in the flash routines.

I've uploading the XOR key i'm using here:
Download xor.key from Sendspace.com - send big files the easy way

If you XOR the K-30 v1.5 firmware with this you'll get the correct firmware.

Now I've got a working decryptor I can properly debug it and write some nice C#. Then I'll probably release some firmware tools that allow you to decrypt and checksum the binary.
Forum: Pentax SLR Lens Discussion 02-26-2014, 01:19 PM  
Collection of Lenseep / Lensroms
Posted By Duc-Driver
Replies: 58
Views: 12,093
edit list of lensroms and sort it: there are a few roms without data in lensrom.

Now you can find some Files to enable debug menu of K3; K30, K5IIs, K5II, K5 in the database
Forum: Pentax DSLR Discussion 02-22-2014, 12:36 PM  
Resurrecting Pentax firmware hacking
Posted By patarok
Replies: 765
Views: 299,059
here the reply to duc-drivers post:

i have done it on the k-5II so it should not be any problem on the K-5IIs.
First time I tried that on the new firmware 1.06 on the K-5II, I made a mistake that could happen easily to someone else:
I created a file called "00077680.536" with ms-notepad in which i wrote following lines:
[DEBUG_MODE EN]
[SW_DEBUG_MENU EN]
[OPEN_DEBUG_MENU]
[VLENS_CONTROL]

following the guidance of other people who successfully switched in to debug mode on their cameras i also created a second file with the naming:
DEVELOP.MOD

MY failure was not to check for a second suffix. That sounds weird but ms-notepad seems to tend to append a .txt suffix behind the suffix you gave the file when you save it as pure text file.
So i saw the "00077680.536" i created was actually named "00077680.536.txt" when i reviewed the contents of the directory that contained all the debug stuff with the "dir" command in cmd.exe. (You get to the old commandline when pressing WIN+R and then type in "cmd.exe" and then hit enter)

Then i reviewed the other file.
So essentially important is that you check those files for a "post-suffix".

Second: Many Operating Systems handle their files CASE-sensitive. So it really matters if you name the files with CAPITAL-letters or not.

Third: It may be a problem with the text-encoding if you are on strangeOS. Some operating-systems, file systems, applications and who the heck knows what else colludes here, tend to save text files with other encodings. Onlywin-Users may believe that a pure text file could only be saved with ANSI encoding. That is definitely not true. There are a lot of encodings, though ANSI was the most common in winworld for a long time and UTF-8 is also very common now on many Operating-Systems.
For our "endeavour" only ANSI-encoding will work. (At least it worked for me)

Fourth:
According to all I heard the files main name(in my case: "00077680") is given by the model number of the camera. Then there is a special suffix that could depend very much on the firmware version you have on your camera.
How to get to know that number:
Go download the latest frmcrypt.exe with the link on Welcome to Pentax Hack, download the firmware corresponding to the one that is installed on your camera from ricoh-imaging.
extract that firmware on to your hdd.
put the *.bin file (the firmware binary) into the same folder where your frmcrypt.exe sits.
Then go and run "cmd.exe" by hitting "WIN+R" and then type in "cmd.exe"
dir to the folder and then run:
frmcrypt.exe *.bin *.out
where "*.bin" has to be replaced by the filename of your firmware binary and "*.out" should be named to your liking.
Then you go and open that "*.out" file with notepad or some other text-editor.
hit ctrl+f.
then you type in "%03d". Hit ENTER.
the editor should highlight the string we have searched for. one or two words right to "%03d" you should find something like "C:\KB536.BIN" that is what we are searching for.
The 3 digits 536(in my case, with firmware 1.06) is what the suffix should be named with.

Fifth:
When you are done with that, the files "modelnr.%03d" and "DEVELOP.MOD"(which should or at least can be an empty file) should be copied to the root of the SD-Card in your Camera.

Sixth:
If you followed those steps, you should:
Turn off the Camera and turn it back on whilst pressing the MENU button(on the DSLR) AND leaving the card door open.
Do not hesitate. The screen may stay black for a short time, do not worry.
Given that you did all entries like i did(I wrote every entry to my modset in this post), you should see Development Menu1 on your screen.
there are many options. If you want to know what all that should be good for, you should read a pentax service manual. (at least for the older models you can download a file from "www.pentax-hack.info")
WARNING WARNING and another WARNING! Never do panic. Also do not do anything when you do not know what you are doing.
I also will have to read a service manual first before i can change or modify anything. there is no such thing as a neo. Everything that a human being can now, it has to learn before.
So actually there are only a few useful things that you can do with this, if you do not know how to program for microcontrollers and how to use the fujitsu IDE to develope software for cameras like this.
ONE thing that can be done is switch off SDM on lenses and force them to use the motor drive shaft instead for Autofocusing.
there are tutorials on the internet on how to do so.

one of them should be located at:
https://www.pentaxforums.com/forums/10-pentax-slr-lens-discussion/208353-how-...m-f-2-8-a.html
another one:
How to deactivate SDM and allow for screw drive autofocus with DA* 16-50mm f/2.8 - Le site des amateurs de PENTAX

and in german:
Deaktiverung des SDM an DA* Linsen -> HOW TO - DSLR-Forum

Please mind that every different lens may(or for sure will) need a different hexadecimal modification in its rom.!!!!!!!!!!!!!!!!!!!!!!!!

Another thing, that most people think is useful to them, is turning off "Dark Frame Substraction" this shortens the time the camera needs for postprocessing after taking long expoosure shots.

Maybe if we tinker a little bit, we could get better noise reduction on our cameras. But that would need much more experience and knowledge than i have at the moment.

Everything else you might like to change or tinker around leave that to the real Hackers and people with very much programming experience.

BACK TO THE MAIN PURPOSE OF ALL THIS -> down and upload lensroms.

maybe you panic and think "oh my good i am missing that menu on my camera. Oh no! All for the birds." Stay calm. i also almost lost hope. Because it may seem to you that there is only one page of options
when you switch on your camera into debug mode with the given flags in that modset file named with the number.
just go down the menu and e voila the next page of the debug menu appears. When you are on page 4 that is called "Development Menu4"
You then should see options:
LENS ROM DAT SD=>CAMERA
LENS ROM DAT CAMERA=>SD


Some more nerve saving tipps:
When you try to leave that Development Menu by pressing the MENU button, the screen stays black in first place.
Then you have to press the shutter release button halfway down.
After you have done that the camera shows a string on screen that says "DEBUG MODE".
When you see this string just press the INFO button and the normal display appears on the lcd.
It is almost as in normal mode, except when you press info a lot of times so you go and see the water level display, you can not go further. You are maybe stuck with that "DEBUG MODE" info on your screen.

in case of emergency, you always can go into the cameras normal menu where inbetween custom properties tab and the tab left to it, a test mode menu appears where you can switch off debug menu.
Very seldom, but it happens in some cases when you play with the real debug functions of the camera. The camera can get stuck awefully bad.
No turning back on, some info is steadily showing up on the monochrome lcd on top of the body.
Solution:
Do not panic. Switch off. Open the door pull out the battery. With no battery inside the camera turn the lever like you would do when switching it back on and push the shutter release button for at least 5 seconds.
Then turn the lever back into the OFF position, put back the battery in to the camera close all doors, pray to god and turn it back on.
REMBER YOU ARE DOING ALL THIS ON YOUR OWN RISK!
DO NOT BLAME ME, OTHER HACKERS OR PEOPLE WHO
PUT TUTORIALS LIKE THIS ONLINE, FOR ANY HARM THIS OR ALIKE PROCESSES DO TO YOUR PENTAX DSLR!!!!
And at DO NEVER!!! NEVER blame Pentax or Ricoh for it if you brick your Camera.

If you really bricked it, it is on your own decision to kindly ask a service partner if he could do anything for you or your camera.
he may offer you to buy it for spare parts.
Or you could send it to shodan, and be one of the first with a Custom Hack Pentax if you talk with him about it first and he agrees to sending you the camera back on your own cost.

From here on you should be cool with doing lensrom modding according to those tuts i gave you the link for in this post.

If you do not see those options in Development Menu 4 or do not know how to go on further, then please do yourself a favor and stop. just give up.
if everything goes fine, help is already on the way.
There is one person trying to deliver a complete solution for all your needs that is a kind of CHDK or Magic Lantern for Canon Cameras.
Maybe you already read his first post in this thread.
If you want to help him, try to send private messages to him. AFAIK he is in need of testers, when he is done with coding, and he would be happy if some peeps would donor him actual pentax DSLR models that maybe have some malfunctions like a destroyed display(i guess he could hook up an hdmi display for his work on the cameras) or a shutter that jams sometimes.(So that those malfunctions would not affect his work on extending firmware functions of the camera).
As i read it, he will work everything out for the K-30 in first place, and then (maybe according to what models he gets donored first) for the other Pentax DSLR's.

So i wish you much luck with whatever you trying to do with it. Go and support Shodan!
I hope i helped some people with this.
Forum: Pentax DSLR Discussion 02-04-2014, 06:04 AM  
Resurrecting Pentax firmware hacking
Posted By Shodan
Replies: 765
Views: 299,059
Resurrecting Pentax firmware hacking

I better start with an introduction as this is my first post. I own a K30 with a load of old manual lenses. I'm also a full time reverse engineer and I'm very interested in rebooting firmware hacking on the Pentax. However I need help and can't do it alone.

I've gone through all the previous posts on Pentax hacking as well as the useful but old Pentax hacking site. Based on this I've seen that the biggest problems for creating a hacked firmware are:
  • Need for experienced reverse engineers

  • Cost of the required tools such as IDA Pro

  • The FP instruction set


Luckily I can help with some of the above. First with experience. I'm a hardware hacker who previously ported CHDK to my Canon Powershot - I've got some experience in hacking firmware on cameras. Next with tooling, for the people who don't know you need an expensive dissasembler called IDA Pro. I have this and the tool that changes assembly into a higher level language - the decompiler. Finally is the instruction set. I've done a lot of work reverse engineering the chip that's inside the K30 and I believe newer models as well. This I think is a Fujitsu Milbeaut MB91696AM. The great thing about this is that it's based around a Dual core ARM Cortex M4 CPU. This means no horrible FP instruction set! It all ARM and that's what I'm good at.

My progress so far:
  • Decrypted the firmware

  • Performed a lot of reverse engineering. Large parts found including memory allocation functions, displaying text on screen etc

  • Found all the debug processing code

  • Found the firmware decryption routines

  • Written custom firmware that allows custom code to be run

  • Started the PHDK project


Useful links:
PHDK Wiki
Paper describing the work so far - very technical
PHDK source code


What I need (so far):
  • Service manual for a K30 (or even a similar model). This would be really useful in understanding how all the debug functionality actually works

  • Datasheet for the MB91696AM or even a very similar ARM based CPU

  • Someone to tell me the offsets to icons/text images in the binary. This would rapidly increase the amount of functions I can find!


How you can help:
  • I will need testers. Be warned there is a small chance of bricking the camera...

  • I need people to help with the disassembly. You'll need a copy of IDA Pro (or maybe notepad - see below).

  • Anyone know anyone at Pentax / Ricoh. I'm considering dropping their marketing team an email.

  • Don't request features. At the moment there is only one feature - get custom code running on the device.

  • Don't request other cameras. I own a K30 and that's what I'm working on.


One of the big things is helping with decompilation of the firmware. It's too big to do alone. Given this I can dump a massive text file with all the functions in C-like code. If anyone has some programming background this might be a good way to help out. Is anyone interested? I still want to play nice with Pentax while i'm requesting their help so I will only PM out the file.

Big issues at present

Icons / text images (fonts)

There are very few strings in the main camera code. All the text is embedded in image data. I suspect that this is as RAW bitmap data directly in the firmware. It would be really useful to get the locations of at least one of these images, then I can find the rest. I'm not quite sure how to find them but The Gimp has an option of opening RAW files and changing the offsets into it. I've had a look but with not much luck.

Give me a few weeks and I hope to be at the point where I can write custom firmware which can then execute a file on the SD card containing additional functionality. I want to perform my code changes inside the debug mode routines, this should mean it's safer as this code is not called by default. At this point some brave soul will need to Flash their camera. Once that works all we will need to do is update the executable on the SD card. Well that's the idea any. Other options are to find a method in the existing debug routines which allow this or alternatively look for an exploit.

Brain dump over.
Forum: Pentax K-3 & K-3 II 01-17-2014, 11:08 AM  
K-3 Awesome For Wildlife
Posted By KDAFA
Replies: 19
Views: 6,170
Hi, and for all those of you coming from "outside Pentax" who've now purchased the K-3 primarily for wildlife/birding, a warm "Welcome to Pentax"; and may I also encourage you to try out some non-telephoto Pentax lenses with your K-3. I think you'll like the results. :-)

There are many lenses, and user needs differ, but here's just a quick intro:

Portraiture: FA77 Limited f1.8. Aside from truly excellent sharpness, colour, bokeh and contrast, the image rendering is legendary. One has to experience it to understand the reputation this lens has in the Pentax community.

Macro: DA35 Limited f2.8. Stunning detail, breathtaking colours, superb micro-contrast and lovely macro bokeh. Doubles as a versatile walkabout lens also.

And there are many others.

Mind you, the lab test measurements and online lens reviews may not always be particularly outstanding, but don't be misled. We in the Pentax community are pretty "used" to this, and we know from personal experience gained through thousands of REAL-LIFE shots that the above Pentax lenses (and many others I'm not listing here) are just frankly, superb.

Happy exploring in the wonderful world of Pentax. :-)
Forum: Pentax Full Frame 03-26-2013, 05:01 AM  
K3 full frame 27th March
Posted By Parallax
Replies: 242
Views: 43,396
If Rice High said the sun would rise tomorrow, I'd stock up on flashlights.
Forum: Pentax DSLR Discussion 06-28-2012, 03:16 PM  
The Mysteries of a Pentax Camera Strap
Posted By LaurenOE
Replies: 31
Views: 7,562
A little write up I did.

I had some time on my hands.

The little things I think about sometimes.

The Mysteries of a Pentax Camera Strap

:D
Forum: Visitors' Center 04-18-2012, 09:48 PM  
Minolta 50mm f1.7 on Pentax K-x
Posted By RioRico
Replies: 3
Views: 4,465
One member PM'd me a question based on the above. I'll post and answer it here:

The answer is NO, but not for the reason(s) you might think. Any lens (the SECONDARY) can be reverse-stacked onto a lens (the PRIMARY) mounted on a camera. But for decent performance, are some guidelines:

* The secondary should have an aperture ring. Whether Maxxum-Alpha lenses do is irrelevant. (I can't check that right now.) Pentax DA lenses certainly don't, and aren't suitable here.

* Both the primary and secondary should be primes. In my experience, all zooms used in reverse-stacking have terrible vignetting. The secondary should be shorter than the primary. Leave the primary's aperture wide-open, and control the exposure and DOF with the secondary's aperture. These are all necessary to avoid awful vignetting.

* The good news: Depth of the lenses' front insets don't really matter. At least, deep insets don't vignette. The magnification *may* be slightly affected; I'd have to test to be sure.

So if your Maxxum lens is a prime with an aperture ring, it *can* be reverse-stacked... onto a longer prime. Good luck!
Forum: Pentax DSLR Discussion 03-17-2012, 11:43 AM  
Nice Discussion of Phase Detection AF
Posted By stevebrot
Replies: 3
Views: 1,615
While there is a nice article here on PentaxForums regarding autofocus technology, I thought it might be helpful to share this link as well:
Autofocus: phase detection
The Web page (from Stanford University) features an interactive "applet" demonstrating phase detection AF in an SLR camera. There is also helpful explanatory text that helps make it clear how it works.


Steve
Forum: Pentax K-01 02-02-2012, 07:08 AM  
K-01 Astrophotography?
Posted By ScreamingIdiot
Replies: 8
Views: 4,878
Think about it: NO mirror to shake your telescope while being fully compatible with your Prime Focus and Eyepiece Projection adapters... VERY nice color depth... VERY GOOD ISO sensetivity... AND it does video capture so you can stack frames.
Forum: Video Recording and Processing 01-21-2012, 12:58 PM  
New Rode mics coming
Posted By Anvh
Replies: 9
Views: 1,745
Two new Rode microphones are coming out specially for DSLR.
One isn't that special but the other has a build-in recorder.
So if you want an all in one solution that one looks really promising.

RØDE launches two new VideoMics - Imaging Resource
Forum: Pentax News and Rumors 12-19-2011, 01:37 PM  
Translation of Kitazawa Interview
Posted By v5planet
Replies: 364
Views: 61,684
**Alright. The interview is now here in its entirety, translated to the best of my abilities. There are a few holes, and some areas where I was uncertain of what precisely was being said (my Japanese is quite rusty). Nevertheless, I think you can glean the thrust of the interview from this. If anyone is better with their Japanese than I am, by all means please let me know if you see any goofs and I will edit this post accordingly to reflect a more accurate translation***


— リコーといっしょになったことで、ペンタック スにとってなにか変わったことがありますか?
-- Have there been any changes for Pentax now that you've merged with Ricoh?

北沢 われわれがやりたかったことを経営層がよ く理解してくれ、それをバックアップしてくれていま す。これは大きいことですね。
Kitazawa: There are things we've wanted to do [at Pentax] that the management has shown a lot of understanding for. This is allowing us to go back to those things. This is a big deal.

— リコーからものすごく期待されている。
-- There are very high expectations from Ricoh.

北沢 ですから、その期待される喜びよりもプレッシャーのほうが大きいですけどね。
Kitazawa: Exactly, and because of that there is a lot of pressure on us to meet those expectations.

— 結果的にはペンタックスにとってはよかった ですね。ペンタックスのユーザーにとっても今後が 期待できるということですよね。
-- It seems the merger has been a great outcome for Pentax. Pentax users are going to be able to keep their expectations high now going forward as well, aren't they?

北沢 そうですね、ぜひ期待してほしいです。
Kitazawa: Indeed, and we absolutely want them to be excited.

— このPENTAX Qですが、これはミラーレス カメラになるんですか?
-- Now that we have the Pentax Q, is there going to be a move towards mirrorless cameras?

北沢 ジャンル分けするとミラーレスですが、 別にミラーレスというジャンルに入れようとして作ったわけではないです。 一眼レフだと大きい重いというお客さまの意見を聞き、 どこまでぎりぎりサイズダウンできるかやってみたという感じですね。
Kitazawa: Although it's true that the Q would be considered "mirrorless" if you were to try categorizing it, I would not necessarily say it was made with the specific intention of entering that genre. [edit: I have re-translated the preceding sentence to what I now believe it is actually saying, namely that the Q was not made as a response to mirrorless per se, which is in keeping with Pentax's earlier statements about the objective of the Q. My earlier translation suggested that Pentax does not feel they necessarily need to enter the mirrorless market at all, which I no longer believe to be an accurate translation.]. Listening to our customers' concerns about the size and weight of SLR cameras, we felt we should try to see just how far down we could miniaturize our products.

— 去年、このインタビューの企画での北沢さん のお話で印象に残っているのは、ひとつは、一眼レフカメラはもっともっと小型化できるという話でした。
-- In preparing for this interview, I was left with one impression that stood out from many earlier conversations with you, which is that there is still much that can be done to miniaturize SLR cameras more and more.

北沢 そうですね、もっと小型化できますね。
Kitazawa: That's very true -- they can surely be made smaller.

— もうひとつは、一眼レフは機能に特化した一眼レフカメラが出てくるだろうと。それにより安い一眼レフカメラはだんだんミラーレスに 置き換わっていくともおっしゃってました。
-- Another thing that stood out was the prediction that going forward we will likely see SLR cameras come out that are built for increasingly specialized purposes. Meanwhile, cheaper SLRs will gradually be replaced by mirrorless cameras.

北沢 そうです。いまでも同じ考えです。ミラーレスは価格を安くできる。一眼レフの下の層というのは当然ミラーレスに置き換わってくると思います。
Kitazawa: Yes. I have the same thoughts even now. Mirrorless cameras can be made inexpensively. I think it is only natural that the lower levels of SLR cameras will come to be replaced by mirrorless alternatives.

— ペンタックスは今後、PENTAX Qとは違う新しいミラーレスの開発、なにかやろうとしているんじゃありませんか(笑)
-- So, Pentax wouldn't happen to have any new mirrrorless developments this year aside from the Q, would they? (laughter)

北沢 いろいろ検討はしています(笑)。
Kitazawa: We are exploring various ideas. (laughter) [Mike Cash has indicated the word Mr. Kitazawa used here is generally a very empty promise]

— それはいま市場にあるようなミラーレスじゃな いミラーレスですか?
-- Are any of these ideas a departure from what is currently offered in the market for mirrorless cameras?

北沢 それはどういう意味ででか( 苦 笑 )。
Kitazawa: Whatever do you mean by that? (sarcastic laugh)

— ペンタックスですから、ほかと同じものを出してもしょうがないですもんね。
-- Well, what I mean is that with Pentax, even when you show us something that's the same, it is inevitable [that it will be different].

北沢 むずかしい質問ですねえ(苦笑)
Kitazawa: Now that's a tough question. (sarcastic laugh)

— たとえばですけど、センサーサイズが違うとか、大きいサイズのセンサーのミラーレス。
This is just an example of course - but let's say it was a different sensor size. A mirrorless camera with a larger sensor.

北沢 う~ん。
Kitazawa: ::non-committal grunt:: [thanks, Mr. Cash]

— じゃあ質問を変えますが、ミラーレスカメラを ペンタックスが作るとすればフルサイズっていうの は可能ですか? 不可能ですか?
Well okay, to reword the question then: if Pentax were to make another mirrorless camera, is it possible that it would be full frame? Is that not a possibility?

北沢 そう来るんですか(苦笑)。えっとですね、 そのフルサイズができるかできないかという質問に 対してはイエスですね。当然のことながらペンタックスとしてねらうところは画質です。
Kitazawa: So it's come to that point, has it? (laughs) Well... regarding your question of whether or not it is possible to build a mirrorless camera with a full frame sensor: the answer is yes, it is. Now of course, at Pentax what we are aiming for is the highest in image quality.

— なぜ画質なんでしょう。
How are you going about that?

北沢 4Kとフルハイビジョンを見比べるとフルハイビジョンがとてもプアに見えるんですよ。10 年前にあれだけ感動したフルハイビジョンが 。実際に、4Kの風景の画像とかみると鳥肌がたってきます。
Kitazawa: When you compare 4K and regular high-definition television, regular high-definition really looks quite poor. This is the same high-definition that just ten years ago was so impressive. In practice, when I look at 4K footage -- of landscape scenery for instance -- I get goosebumps.

— 私も見比べたことありますが、差は歴然。
-- I've compared them too, and the difference is clear.

北沢 各家庭にフルハイビジョンのテレビが普通に置いてあるなんて 10 年前は想像しなかった。 あと5 年または10 年くらいで4Kまたは8Kの画質が家庭で楽しめるとしたら......。一度すごい画質を 見てしまうと元に戻れないんですよね。
Kitazawa: Ten years ago no one would have imagined every family would now have a high-def television. Keeping this up, we might all be enjoying 4K or even 8K images in 5 or 10 years... Once we saw incredible image quality, there was really no going back, you know?

— うん、確かにそれはいえますね。
-- Yes, one could certainly say that.

北沢 それは写真も同じだとすれば、ねらうところ はフルサイズかなと、個人的には思います。
I wonder to myself whether we should be aiming for full frame to see the same happen for photography.

here's some more....

— じゃあ、いっそのこと645をミラーレス化すれ ばどうですか?
-- Well then, wouldn't you rather see the 645 go mirrorless?

北沢 645 ですが、そのうちミラーレスを作りたいですね。 理由は一眼レフのミラーショックです。この微振動ってかなり画質に影響しているんです。 将来的にはフルサイズや645でミラーレス化をねらいたいなと思います。
Kitazawa: Well, regarding the 645, sooner or later we will want to make it into a mirrorless. The reason is the mirror shock inherent to SLRs. Those very tiny vibrations do have an effect on the final image. I think in the future I would like to pursue mirrorless full-frame and 645 cameras.

— おおっ、大胆な話ですね。どちらが現実味があるかというとフルサイズのミラーレス化。
-- Oh my, these are quite bold statements. If we were to look at which is more likely, it would be full frame going mirrorless.

北沢 そうですね。
Kitazawa: It seems that way.

— もうだいぶん進んでいるんですか。
-- Have you already progressed to that point?

北沢 ぜんぜん進んでいません。言ったじゃないですか。僕の個人的な思いだって(笑)。
We absolutely have not. I didn't say that, did I? These are just my personal feelings. (laughter)

ー それはウソです(笑)。ペンタックスがフルサイズで勝負をするなら、一眼レフじゃなくてミラーレスで勝負したほうが勝ち目はある。 ミラーレスのフルサイズっていうのはいまのところはライかだけ。それをペンタックスの技術でフルサイズを出すってことは期待大ですね。
-- Now that's a lie (laughter). If Pentax is to enter the full frame battle, it looks like the path to victory will be with mirrorless rather than SLR. Right now Leica is the only one offering a full-frame mirrorless camera. There's a big expectation that Pentax will use its efforts to release a camera in that space.

北沢 ほかのメーカーがフルサイズのミラーレスをだしていませんから、いま現在出せばですね、いわれたようなことがあるかもしれないですね。
Kitazawa: Because no other manufacturer has yet released a full-frame mirrorless camera, [...]

ー そうなるとやっぱりレンズも一新しなきゃいけないですね。
-- If that happens, naturally you'll need to completely reformat your lens lineup, won't you?

北沢 そうですね。まあレンズはどっちにしろフルサイズ専用のレンズでデジタル設計のものを開発しなきゃいけないので、それはもう必須です。
Kitazawa: Yes, that's right. It would be necessary for us to do this because we will need to come up with designs suitable for digital in order to have dedicated full-frame lenses.

ー ペンタックスが、もし仮に、いいや確実な話だと思いすが(笑)、フルサイズのミラーレスを出すとすれば価格は非常に高い? それとも私たちが買えるような価格になる?
-- So... just for argument's sake, in the context of this conversation (laughter), if Pentax were to come out with a full-frame camera, would it be extremely expensive? Or would it be priced within reach of people like me? [translation is a little muddled here. The interviewer is clearly leading Kitazawa and trying to give him an out from making a definitive statement as to whether we should expect FF]

北沢 ノーコメント(笑)。ペンタックスがもし、もし出すとすると一般のお客様が手に届く価格にしないといけないかなと。645は別ですが。
Kitazawa: No comment (laughter). If - IF - Pentax releases a full-frame camera, I think it would certainly need to be priced within reach of average customers. The 645 is something else...

ー なんだかほんとに近い将来出てきそうですね。35mm判フルサイズのミラーレスが。
-- Somehow it feels like a 35mm full-size mirrorless is truly in our near future.

北沢 近い将来?ありがとうございます(笑)。
Kitazawa: Near future? Thank you (laughter).

ー かなりそちらに傾いていますね。話の向きもペンタックスの姿勢も。
-- Certainly things seem to be leaning that way. I mean, from the direction of this conversation, and Pentax's attitude.

北沢 個人的にはですね。個人的にはですよ!
Kitazawa: These are just my personal feelings. Just my thinking!

[edit] UPDATE

ー でも北沢さんの立場とすれば個人的もなにもペンタックスそのものじゃないですか(笑)。
- But even if you say it's just your personal stance, Mr. Kitazawa, surely it's still a reflection of what Pentax is thinking?

北沢 いやそんなことないです。個人的なお話をしただけです。
Kitazawa: No, of course not, this is just my personal thinking.

ー それはともかく、ぜひ早く欲しいですね。
- Be that as it may, I really want to see it happen soon.

北沢 そこはなんとか開発のエンジンをかけたいなと思います。
Kitazawa: I think I'd like to get the engine going on those developments. [?]

ー うん、それを開けばもう今回のインタビューは終わったようなものです。
- If we were to unpack that statement, it would seem to me that this interview has reached its conclusion.

北沢 えっ?そうなんですか。今の話は個人敵な意味ですからね(笑)。
Kitazawa: Eh? Is that so? That's because this conversation has really just been about my personal thinking. (laughter)

ー 画質にこだわっていきたいということであればフルサイズミラーレスもですが、645のミラーレスということも考えられるわけですよね.
- With all this fuss you're making over wanting to pursue greater image quality, one would assume that you are thinking beyond full-frame mirrorless to 645 mirrorless, as well.

北沢 両方パラレルで検討したいと思います。
- I'd like to examine both in parallel.

ー 一眼レフはAPS-Cサイズで小型化をどんどんねらっていく。ミラーレスは35mm判フルサイズ。そして645もミラーレス化ということですね。
- So for SLR cameras you are aiming to make the APS-C format smaller. For mirrorless, you will go 35mm full-frame. And finally, the 645 will go mirrorless as well, correct?

北沢 ありがとうございます。田中さんにモードマップを描いていただいたみたいで(笑)。
Kitazawa: Thank you very much. It would seem you've been kind enough to sketch out a product map for us, Mr. Tanaka. (laughter)

ーデジタルカメラはもっと多画素化していくのでしょうか?
- Will digital cameras continue to increase in resolution?

北沢 今後、あの 1億っていうのはちょっといくかどうかわかりませんけど、デバイス的には確実に多画素になってきました。
Kitazawa: I really don't quite know how much further it will go from here, but I will say we have certainly come to a point of high resolutions. [little unclear on the Japanese here]

ー 多画素化に対してよく耳にするのは、これ以上の多画素化がはたして必要なのかどうか、です。これについてはどう考えていませか?
- I have heard people saying that it's no longer clear whether continued increase in sensor resolution will be critical going forward from where we are. What are your thoughts on this?

北沢 必要と思います。細かいところまで解像するようになりますので、いままでとは違う写真表現ができる可能性もあります。
Kitazawa: I think it will remain necessary. Because it remains possible to resolve even finer details, it may be that there are still degrees of photographic expression not yet realized by where we have come to thus far.

ー 将来、AFだとか手ぶれ補正の技術はどうなんでしょうね。これはまあ夢みたいな話でもいいんですけれど、もっと変わって行きますか。
- What will become of AF and SR going into the future? It's alright if this conversation seems like a dream, but do you see more changes there going forward? [I think the interviewer is asking Kitazawa to just speculate, rather than give firm answers on what Pentax is doing with SR and AF in the future, although I can't quite be sure]

北沢 そうですね。いまはもうAFにしても手ぶれにしてもやっぱりハード的にか物を動かす方向でやっているじゃないですか。当然それは今後どんどん進化していくんでしょうけれど、将来的にはやっぱり電子化される技術のかなとは思っています。
Yeah. If you look at autofocus and shake reduction right now, the systems are built as hardware with actual moving parts, right? Naturally I think these systems will continue to improve progressively, but if you look into the future, I believe we will see these functions taken over by electronics.

ー ということは、そう遠くない将来にはシャッターだとか絞りの機構が電子化されると。
- Speaking of which - what about the replacement of shutters and aperture mechanisms in the not-so-distant future?

北沢 もう見えていますからね。
Kitazawa: We can already seeing that happening.

ー絞りについても昔から偏光フィルターを使って絞りの役目をするとかって話がありました。
- Even in regards to the aperture, there has been talk about using old-school polarizing filters to fill the same role. [does anyone know what he's talking about? that seems pretty interesting to me]

北沢 そうですね。そういう偏光フィルターとか液晶シャッターとか、液晶の絞りも含めて、いままでメカニカルに動いてたものが電子化される方向になっていくのかなとは思いますよ。
Kitazawa: That's right. Polarizing filters, liquid-crystal shutters, liquid-crystal apertures... I think all the components which have always until now been objects that moved around mechanically are on their way to being replaced by electronics.

ーそうなるとカメラを動かしている機械がですね、ギアがまわったり、パタパタいったりする、そういうものがなくなって、写真を撮っていても味気ないカメラになりそうですね。
- All those moving parts... gears spinning, the mirror flapping, all of that will be gone. With these mechanical components it feels like your camera is wearing down even as you take photos.

北沢 そうですね。みんな味気なくなっているんですよ。ミラーレスになると今度はミラーのパタパタもなくなってくる。電子化されると稼動部分がなくなるのは宿命なのかな。
Kitazawa: Right. All those parts wear down. When things switch to mirrorless, the rattling of the mirrors in today's cameras will be a thing of the past. The conversion of all these components to electronic equivalents seems inevitable to me.

ー かめらというのは精密機械としてのよさも価値もあるはずです。ダイヤルを操作したりすることでかめらの内部で小さなギアが動いたり小さな部品があちこち動いたりする。それを頭のなかで想像しながら触っていることが快感だったわけですよ。それがなくなって、ただ写るだけの機械になっていいものでしょうかね。
Surely cameras also have value and merit simply because they are fine precision instruments. When you turn a dial on your camera, you know that on the inside little gears are spinning, many small components are moving about. It's a pleasant feeling simply holding that in your mind when you are operating your camera. Once it [those mechanical components] go away, it seems cameras will simply become nothing but machines for taking images.

北沢 本当はわれわれからするとメカニックな機械のところって残したいと思っているんですよね。高級なもの、付加価値の高いもの、存在感があるものっていうのはそういうところの感触ですね。人間の感性を揺さぶるようなものっていうのはどうしても必要だと思うんです。
The truth is, from my own perspective, I think I'd like see the mechanical aspect of these machines remain in place. There's a feeling there, like 'this is high-grade', 'this is a value-added item', 'this is something that makes its presence felt'. I think it's absolutely indispensible for us to be able to connect with the things we are using on this level.

ーカメラは撮れればいいじゃないか。自分が思ったように写ればいいじゃないか。操作だとか感触だとかそんな情緒的なものはどうでもいいじゃないかって、そういう人が増えてきたのかなあ。
Isn't it great to be able to take photographs? Operating a camera, that tactile sensation, the feelings -- they're wonderful and I wonder if more people have come to feel that way.

北沢増えてくると思いますが、逆にカメラにこだわりをもつ人も増えてきますよ。
Kitazawa: I think such people have certainly increased in number, but on the other hand, so have the people who are obsessed with the camera.

ーペンタックスはファインダーひとつとってもこだわって作ってますよね。Kー7からは小さなカメラなのに視野率100%で、ファインダーの見えもすばらしいと思う。やっぱりカメラにとってファインダーは大切です。それはミラーレスになっても大切?
The viewfinder is one of the features that Pentax puts a lot of attention into. Ever since the K-7, Pentax has been giving us cameras that -- though they are small -- offer 100% coverage in a beautiful display. Really, to a camera, the viewfinder is very important. When we go mirrorless, do you think it will remain so?

北沢 大切ですね。去年、ミラーレスと一眼レフでなにが違うといえば、やっぱりファインダーと言ったはずです。ペンタックスの一眼レフはエントリーモデルも今後100%にしたいですね、これはぜひ。
Kitazawa: Yes, it is very important. Last year, if you were to point out something that makes mirrorless cameras different from SLRs, it would certainly have to be the viewfinder. Moving forward at Pentax, we want to make even our entry-level SLR models offer full coverage. Without fail.
----
Forum: Video Recording and Processing 06-16-2010, 10:36 AM  
Sticky: The Guide To Manually Controlling Video Exposure on The K-7
Posted By Christopher M.W.T
Replies: 98
Views: 118,096
Disclaimer:

1. I can only verify this works on the K-7 with firmware 1.03
2. This is not my own discovery, it's been based on findings of other forum members and my own experiments.
3. I have tested this on my camera only, others results may vary.


Even though Pentax has not allowed full manual control on the K-7 they have given us control of aperture and apparently so through either programming oversight or on purpose have left a back door to allow manual control.


I. How to get manual control?

1. Go into USER mode
2. Set the exposure program to Av (I have tested M, Tv, Sv, P and none of them work, it would align with my theory that the movie mode utilises its own perverted form of Aperture priority program.

II. Setting the exposure.

1. Once the upon is done, activate Liveview, preferably with the live histogram enabled, I also like to use the dark/light overlay to.
2. Dial in the desired aperture.
3. Dial in the desired ISO. (I believe based on my testing that 100-1600 is the most usable range, however someone else could further test this.
4. Setting the shutter setting is rather trickier, it involves aiming the camera at or away at a light source till you see the shutter speed at your desired value, ie 30, 60, etc and then hit the AE-L button.
5. Turn the dial to video mode and hit the shutter button, you will immediately see the AE-L symbol is still on the screen and your exposure is locked :) as said above this only appears to work in Av mode in USER and no others.

III. Observations & unanswered questions.

1. You can see a clear difference in noise between locking ISO 100 & 1600, this is quite dramatically apparent when you have the dark/light setting enabled in liveview and you have the lens cap on.
2. I am still unsure of the limits of the shutter speed, ie how fast and slow can you lock it or does the camera automatically set the upper and lower limits of this. Further experimentation would have to be conducted.
3. Has anyone been able to pull EXIF data off K-7 videos yet?

IV. Email & Harass Pentax & Their Official Distributors For Proper Full Manual Control.
Forum: Pentax K-5 & K-5 II 05-26-2011, 08:33 AM  
K-5 For Astrophotography
Posted By geo444
Replies: 1,131
Views: 347,772
you don't need tracking on an APSc Camera...
- until ~20 second exposure at ~28mm focal
- until ~25 second exposure at ~24mm focal
- until ~30 second exposure at ~20mm focal




a Specific Mount is an EQuatorial Mount, you cant get it together with
the Scope (Reflector or Refractor) or separately
then 3 ways mounting your camera :
- Camera mounted to the Scope with a T2 Adapter = Prime Focus
- Camera with a Lens, attached to the Scope = Piggyback
- Camera with a Lens, attached to the Mount with a Special Plate

;)
Forum: Digital Processing, Software, and Printing 02-02-2011, 01:05 AM  
Topaz Denoise DOES work with GIMP!
Posted By MetteHHH
Replies: 9
Views: 12,866
I just found a great tip!

A while ago, I was looking at noise reduction tools, and some of the threads in this forum that compared Topaz Denoise with other tools left me green with envy.

I am not a photoshop user, and Topaz software isn't stand alone. I tried to email Topaz Labs to hear if it was possible to integrate their plugin with either FastStone or GIMP, but they never replied. But now I just stumbled upon this step-by-step guide to making Topaz work as a GIMP plugin!

Gimp Users

Will try it when I get off work, but I thought it was worth sharing, in case any of you are in a similar situation!
Forum: Pentax DSLR Discussion 02-03-2011, 12:54 PM  
Calculating EV
Posted By betaPhoto
Replies: 21
Views: 12,605
This chart may help if you can understand how to read it; (The green and red values show 2 example calculations).

Start with an EV, then slide to the right and pick an fStop, then slide up and pick a shutter speed and finally, slide to the left and and you see the needed ISO, also you could go in reverse to find what EV you are shooting in.:confused:
Forum: Pentax K-5 & K-5 II 02-01-2011, 06:39 AM  
Pentax AF saga continues?
Posted By alexeyga
Replies: 18
Views: 5,625
Don't mean to send the thread south... but I'm getting tired if seeing birds of squirrels... would be nice to see some test shots with boobs for a change...

Nice shots otherwise... Is it the Sigma's 300/2.8?
Forum: Pentax K-5 & K-5 II 01-30-2011, 02:30 PM  
My K5 is awesome, and non citrus fruit like
Posted By Tommot1965
Replies: 21
Views: 6,080
Yet another pointless thread...but I felt the need for some Ying, to all the Yang.

K5, without doubt the best Camera I've ever owned..sure its had teething issues...what doesnt...

High ISO is awesome
DR is fantastic
Build is in another world
Design is something to behold
Image quality is WOW
It does 1080 movies TOO.!!!!!
etc
etc
etc.
;)
Forum: Pentax K-5 & K-5 II 01-03-2011, 08:55 PM  
Firmware v1.02
Posted By JeffJS
Replies: 94
Views: 24,245
Let's see an official release and see what it really does before condemning it based on ONE (1) person trying a Pre-release. Hug your K20d's all you like, I agree they are wonderful machines but the K5 is light years ahead of it. No pearls on mine, AF in tungsten is fine, and I've not seen any problems with bounce flash. My ONE complaint on an exposure front is the camera actually tends to Over expose IMO. Easily fixed with a -1 or so EV compensation.

:cool:
Forum: Pentax K-5 & K-5 II 12-29-2010, 11:24 AM  
Are the sensor stains really that bad??
Posted By bobby_navy
Replies: 6
Views: 2,738
I have been shooting with the pentax K-5 for a while now without any problems nor worries, until today i decided to tho the senor stain test. As it turns out my camera does have the stain on the sensor but, its so tiny it took me a while to find it. I began to wonder to myself how detrimental is this really to normal every day shooting because, you have to go to such extremes to actually see it. So i ask you are the stains really so bad that the ruin you ability to take normal every day photographs? I do understand that for the price you pay you expect a perfect problem free camera but, how often is anything is life perfect huh :ugh:? I'm a very novice photographer and i never really pixel peep to find problems in my photos. I'm happy as long as they are pleasing to the eye. So i ask you professional more seasoned photographers and novices alike, how much do the sensor stains affect you, and are you keeping or returning your camera?
Forum: Pentax K-5 & K-5 II 12-29-2010, 11:35 AM  
Are the sensor stains really that bad??
Posted By germar
Replies: 6
Views: 2,738
You sir, have just voiced the simplist, yet wisest conclusion of this entire stain furor. A tip of the hat to you.

germar
Forum: Pentax K-5 & K-5 II 12-03-2010, 06:00 AM  
Old lenses adequate for k-5?
Posted By JonPB
Replies: 53
Views: 15,145
As to the questions posted: Have lenses advanced as much as cameras? Not by a long shot. Although today's computers allow for better designs, particularly of zooms, and coatings have come a long way, the understanding of optics hasn't undergone and significant changes. The theory and practice of recording light, though, has.

Is it worth it to use old lenses on a current camera? Sure. Absolutely. Or no, absolutely not. That's a value judgment. You have the lenses; take some pictures with them. If they meet your needs, then they are worth it. If they don't, they aren't. We can't tell you where you'll come down on that line.

That said, I can say a few things that might help you decide. the primary reason to avoid old lenses is due to the automation of new lenses--aperture and focus. Which has nothing to do with optics. Newer lenses make taking pictures easier because of these features. However, they'll also remove you from part of the process of deciding how to capture the image, which might make you a worse photographer, which will always be the primary limitation.

Most new lenses fail to out-resolve even 10 megapixel DSLRs wide-open. If you shoot mostly at large apertures, I don't think "old" versus "new" is really the question.

Although I don't have a K-5, I expect to keep my older lenses, even the ones substantially outclassed by newer lenses. Why? Because some of them produce a look that I enjoy. I like the images they produce. They may not be all-purpose, but they are worth keeping and using. Do I also use current lenses? Yes, but that's because I like having an autofocus option.
Forum: Pentax SLR Lens Discussion 10-31-2010, 11:16 PM  
Adjusting Lens descriptions in metadata
Posted By stevebrot
Replies: 2
Views: 2,280
I have found ExifTool (with its associated GUI, ExifTooGUI) to be much more usefull than photoME. You can free-text in the lens with the XMP:Lens tag. Focal length can be edited as EXIF:FocalLength.


Steve
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