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Forum: Pentax News and Rumors 10-29-2020, 09:29 AM  
Get ready for a November giveaway & December lens tournament!
Posted By Kobayashi.K
Replies: 127
Views: 4,785
So each year we get this giveaway event rewarding people who can produce as many crap posts as they can in a short time. As if we haven't enough of that in the News and Rumors section. This rewards the opportunists instead of long term users with high quality posts who now get frustrated by this iniquity and perhaps reduce their input or even quit.

What should happen is to organize a poll in which all members can vote which posters consistently had high quality contributions last year (in their view) with helpful information, photos, or sharing tidbits from their projects they put a lot of work into. The winners not only get some highly valued hardware but they can also feel proud of the appreciation from this forum. A positive side-effect is also that another person is awarded instead of harvesting an advantage for yourself.

As an example, my personal vote goes to @Swift1 (Colton Allen) because despite the difficult circumstances he lives in he is able to share high quality photos everybody can enjoy, and @photoptimist who consistently comes up with useful and surprising info, and @The Squirrel Mafia with enthusiastic reports how to use RawTherapee.
There are many more and everybody has his own preferences, but I think an approach like this will be much more advantageous for Pentaxforums in the long term.
Forum: Pentax Camera and Field Accessories 02-17-2020, 03:54 AM  
Battery grip D BG6 for pentax K-1.....are there alternatives
Posted By Kobayashi.K
Replies: 14
Views: 1,101
@hansenn, you have a moral obligation to buy the original Pentax grip and it is better for all of us in the long term:

- The original Pentax grips are reasonably priced if you think about the cost of research and development.
- If you buy a 3rd party grip you deprive Pentax from a return on their investment. Or in other words the 3rd party manufacturers are parasites earning money on products developed by someone else.
- The 3rd party grips are also low cost because they are assembled by workers who are mostly underpaid and treated as slaves.
- The 3rd party grips are usually less reliable because corners are cut in the production and the original specifications are not met. By that you run the risk damaging your camera.

If you can afford to buy a K1 camera you can certainly pay the difference between an original grip and a 3rd party grip, and deep in your hart you don't want a cheap looking and badly fitting grip on your beautiful new Pentax camera, don't you?
Forum: Film Processing, Scanning, and Darkroom 05-17-2020, 08:26 AM  
Drum scanning services?
Posted By Kobayashi.K
Replies: 14
Views: 1,026
When I scan my 35 mm B&W negatives with a Pentax K-70 I have a resolution of about 4200 dpi (sensor 6000 px wide, frame 36 mm wide). However, when pixel shift is used I still see an improvement of the definition of the grain. So I assume a resolution 4500 .. 5000 dpi is optimal.

The opinions on this differ, how far you must go, but I think an essential property of film is the grain, and it should be reproduced in a scan.
Forum: Photographic Industry and Professionals 05-12-2020, 04:25 AM  
Pentax K-3 II successor on September 2020
Posted By Kobayashi.K
Replies: 961
Views: 84,359
So what's the point of joining PentaxForums when you encounter the flippy screen and video zealots everywhere.
Forum: Pentax Medium Format 05-03-2020, 12:58 PM  
medium format and dimensionality
Posted By Kobayashi.K
Replies: 46
Views: 3,258
Isn't this simply a question of tonality. It is a well known property in analogue photography that a larger format gives (can give) better tonality. But I think it is less well known among digital users. The differences in sensor size we are talking about here are relatively small so the effect is less visible anyways.

See also
Why are FF images so much more pleasing than APS-C? - PentaxForums.com
Forum: Troubleshooting and Beginner Help 05-03-2020, 04:41 AM  
Firmware Update
Posted By Kobayashi.K
Replies: 5
Views: 812
What @Sandy_Hancock said.

A full recipe how to install the update is here (follow the points in 'Updating Procedure'):
Latest PENTAX K-70 Firmware Update : Software Downloads | RICOH IMAGING

Notice that Pentax firmware updates are cumulative, which means that the last update also contains all the previous updates. You can update from any version you have on the camera.
Forum: Film Processing, Scanning, and Darkroom 04-29-2020, 09:08 AM  
Developer questions
Posted By Kobayashi.K
Replies: 30
Views: 1,578
The chemical ingredients in a package of powder are not evenly distributed, it is very difficult to achieve that (ask a chemical lab assistant). So, if you use 1/10th of the package and mix it up the resulting developer behaves inconsistent because the composition of chemicals may vary.
Forum: Pentax DSLR Discussion 03-22-2020, 04:34 AM  
Disinfecting camera gear
Posted By Kobayashi.K
Replies: 19
Views: 1,391
The radiation might mutate the virus to a new dangerous strain.
Forum: Pentax K-30 & K-50 04-07-2020, 07:45 AM  
AF fine adjustment - clarification please.
Posted By Kobayashi.K
Replies: 9
Views: 1,031
Thanks. The difference between AF and Manual is that the former uses a feedback loop with the focus motor involved. In Manual the loop is cut open and only the phase detect part from the AF module is used, so that would potentially change its behaviour. I'm going to read the threads provided by @MarkJerling and @Adam to understand it fully.
Forum: Pentax DSLR Discussion 03-22-2020, 12:43 PM  
Is It Time To Buy That Back Up Camera Body?
Posted By Kobayashi.K
Replies: 44
Views: 2,313
My workhorse is a Pentax K5-II with grip, and my backup camera is also a K5-II with grip. Shortly after I got my first copy I wanted to have an extra battery and battery charger (as backup), but I decided to purchase an extra body instead, which is relatively cheap because battery and battery charger are included. My philosophy is also that a real backup is a camera of the same type, and even with the same lens; my standard lens is the DA 21 mm and I have two of them.
Forum: Pentax DSLR Discussion 03-22-2020, 05:15 AM  
Disinfecting camera gear
Posted By Kobayashi.K
Replies: 19
Views: 1,391
As for the gear, UV light is an effective way to kill off bacteria and viruses. A disadvantage is that it will accellerate the aging of plastics (sticky grips).
Forum: Film Processing, Scanning, and Darkroom 02-29-2020, 04:01 PM  
Water question with Developing film
Posted By Kobayashi.K
Replies: 41
Views: 1,609
I like the idea of caffenol but you cannot expect to have consistent results with household ingredients. And when one ingredient is changed, for example another type of coffee, it costs too much time to adjust your formula to replicate the results you had.
Forum: Pentax DSLR Discussion 02-27-2020, 04:20 PM  
Composition Adjustment v Tilt/shift Lens
Posted By Kobayashi.K
Replies: 27
Views: 1,432
@photoptimist I usually appreciate your posts for correctness and level of information, but now I must disagree ;)

The electronic level as seen in the viewfinder has a resolution of one degree (my Pentax K5-II), which is actually a huge deviation and a useless feature because in practice it is easy to level out a hand-held camera at less than 0.5 degrees with a bit of attention. If you show a photo on screen though the eye can easily see deviations of 0.1 degree, so that's the range for additional corrections you have to do in post.

It is an illusion you can make a perfect photo directly from the camera, not even remotely. I hear this often, notably from film users who learned this before the digital camera was invented (to be clear I still use film myself). Now I suspect this argument is mostly used by people who dislike sitting at a computer screen to do some work.
Forum: Photographic Industry and Professionals 01-31-2020, 01:23 PM  
Pentax March 2020 Interview Questions (formerly CP+)
Posted By Kobayashi.K
Replies: 56
Views: 8,586
If questions are too specific or confrontational, or possibly exposing too much of their strategy they don't want to share, we will certainly get answers that are short, vague and evasive, as has been the case in previous interviews. So perhaps it is better to ask more general (polite) questions about matters we know little about but still interesting. This ensures a positive atmosphere during the interview, and perhaps they are willing to tell us a bit more as a result.

Personally I would like to know how the design of the camera bodies is organized. Is there one single person who does the design, or a team. Is the design done by Pentax, or do they contract it out to an external design agency. And how about the design of the new APS-C, it seems to be a more stylish deviation from the K7, K5, K3 line, but still with a classic appearance.
Forum: Photographic Industry and Professionals 01-31-2020, 04:19 PM  
Pentax March 2020 Interview Questions (formerly CP+)
Posted By Kobayashi.K
Replies: 56
Views: 8,586
About the RICOH Camera SDK (software development kit).

1. Please can you tell us what was the philosophy behind launching the RICOH Camera SDK, and how is it going until now.
2. Can we also expect support for other cameras than the flagships.
3. Are you also planning wireless (WiFi) for platforms other than iOS and Android. It would be great to have a wireless connection to a desktop or laptop with Windows without using an Android emulator.
Forum: Pentax Camera and Field Accessories 02-02-2020, 02:20 PM  
Protector Filter vs UV Filter
Posted By Kobayashi.K
Replies: 79
Views: 3,099
When I must choose between a NC, UV or a skylight filter as protection I usually select the latter because it has an extra function for free (the price of these filters are about the same). Of course this will certainly apply when you are shooting film and digital.

For people who would like to use a protection filter on a lens but afraid to tell anyone, then a useful filter on digital could be a polarizing filter; which is of a type you can easily defend. :-)
However, contrary what you would expect they have a filter factor 3 or 4, so inevitably your ISO value goes up. And they are not cheap.

@newmikey, of course adding a filter can only worsen IQ, no question about that. It depends what kind of photographer you are (your style), what kind of lens is used, or if you want to show the photo on a monitor (shooting JPEG anyways) or use it for a print with maximum quality. Sometimes it doesn't matter if you have a bit less IQ. Depending on the circumstances one can decide to add a filter or not, there is no absolute truth about that.
Forum: Pentax Camera and Field Accessories 02-02-2020, 11:37 AM  
Protector Filter vs UV Filter
Posted By Kobayashi.K
Replies: 79
Views: 3,099
I also prefer the B+W filters (F-Pro) because they have a brass ring and sufficient height to mount a screw-in hood.

On film I use the original Nikon and Pentax filters (they are also brass and 5mm high), you can still get them in mint condition for half the price of a B+W or Heliopan. Notably the Pentax filters are beautifully made with nice engravings and a silver nose (take one in your hand and feel how heavy they are). IDK perhaps they are degraded a bit but I don't care about a little flare and I'm also not a sharpness freak.

So, I have a practical approach. When I go out shooting I dump the camera (film or digital) in my backpack because I know the lens is protected by a filter and a hood, and when it collects dust and dirt I can clean the filter instead of the lens.
Forum: Pentax Camera and Field Accessories 02-02-2020, 09:49 AM  
Protector Filter vs UV Filter
Posted By Kobayashi.K
Replies: 79
Views: 3,099
The B+W and Heliopan NC filters have exactly the same coating as the regular filters. Just look up the specs from the manufacturer of your specific filter.

You can safely reuse your UV filters as protection filters on digital because they remove nothing from the visible spectrum. You can even use the skylight filters for that, they theoretically only remove a little bit of blue, which makes the sky a bit darker (like the yellow filter), but actually the NC, UV and skylight filters all have a filter factor 1x.

The main point is that you should use a hood in front of the filter to prevent flare, which is nothing different from a plain lens. You can find tests on the internet to determine degradation of the image when using filters at various types of lighting, but the difference is immeasurable when you are using a hood.
Forum: Photographic Industry and Professionals 01-31-2020, 10:46 AM  
Pentax March 2020 Interview Questions (formerly CP+)
Posted By Kobayashi.K
Replies: 56
Views: 8,586
I would like to know from Ricoh if they are going to implement the (10 bit) HEIF / HEIC file format as an alternative for JPEG in their cameras in the near future.

Currently there are only a limited number of editors supporting this format, and at first sight its seems to be a chicken-and-egg scenario, but I think if camera manufacturers are beginning to support this format (Canon already did this for their EOS-1D X Mark III DSLR) the editors will quickly follow.

If Ricoh / Pentax is a forward thinking company I guess they already have this option tested and in stock, but they wait implementing it until customers are beginning to ask questions. So, who knows, it is already a potential option for the upcoming APS-C camera.
Forum: Pentax Full Frame 01-25-2020, 01:42 PM  
K-2 Wishlist
Posted By Kobayashi.K
Replies: 67
Views: 5,656
I would like to see all new Pentax cameras supporting a 10 bit HEIC/HEIF file format.
Forum: General Photography 01-13-2020, 06:27 AM  
Random photography-subject generator
Posted By Kobayashi.K
Replies: 16
Views: 2,374
If you like combining photography with programming, another experiment could be to write a random sequencer using the Ricoh SDK (taking photo's at random moments). Put the camera on a tripod, connect to the computer via USB and point the camera at a street scene from your home. Press the button in your app and walk away doing something else. At the end of the day you have a collection of surprising pictures, perhaps some of them even brilliant (tell nobody of the method).
Forum: Pentax K-5 08-11-2013, 05:19 AM  
Pentax K-5 II Problem after Firmware Update
Posted By Kobayashi.K
Replies: 13
Views: 3,127
To be absolutely sure, did you indeed use the update for the K-5II (k5_2_104.exe) and not for the K-5IIs (k5_2s104.exe)?
Latest K-5II/K-5IIs Firmware Update : Software Downloads | RICOH IMAGING
Also, use an SDHC card that is formatted in the camera, not on your PC.
Forum: Pentax K-30 & K-50 07-19-2013, 12:23 PM  
Turning off the K-50/K-30 LCD display.
Posted By Kobayashi.K
Replies: 29
Views: 12,539
Summary - The LCD display (monitor) for the K-50/K-30 can be switched off completely by setting | INFO | INFO | Select Display Off | and saving your settings to USER1 or USER2.

Intro - Previously, several people have asked how to switch the K-30 LCD screen completely off, because it can be annoying to have it shining into your face when taking pictures, notably in the dark. It can also save battery power. It appears that the K-50 and K-30 have no simple menu item for that, and I couldn't find any practical solutions on PF, so here is a working recipe I tried out on my K-50. I guess this will also work for the K-30 and K-500.

Overview - The LCD screen is switched on when the camera is turned on (Status Screen), when a picture is taken (Instant Review), and when Program Mode is changed (Guide Display). It is possible to switch the LCD screen off with | INFO | INFO | Select Display Off |, but it is not permanent, it is reset to 'Status Screen' again after the camera is switched off/on. You can, however, conserve this setting in a USER setting.
The Instant Review screen shows a copy of your photo after taking a picture. It must be switched off too by setting the display time to 'Off'.
The Guide Display shows up when the Program Mode is changed. Some have suggested to switch the Guide Display off as a general solution, but its effect is only limited to this screen itself (Menu Tool | 1 | LCD Display | Guide Display | Off). In the following receipe the default Guide Display behavior is not modified because it is not invasive (Guide Display = On).

Recipe - Switching off the LCD screen.

1) Disable showing an Instant Review after taking a picture.
Menu Rec. Mode | 4 | Instant Review | Display Time | Off |.

2) Switch the LCD display off.
Button INFO | Button INFO | select Display Off | Button OK.
The display is switched off.

3) Show the menu again.
Button MENU.

4) Save all your settings as user settings.
Menu Rec. Mode | 4 | Save USER Mode | Save Settings | USER 1 (USER 2) | Save | OK.
Don't forget the OK button.

5) Set the mode dial on top of the camera to U1 (U2).
The Guide Display is shown for a short time, the display is then turns off.

When the camera is turned on in this state, with the mode dial in position U1 (U2), the LCD screen is still showing the Date Adjustment screen (as if the camera is turned on for the first time), because a USER1 (USER 2) setting has its own Date Format, Date and Time. They must be set seperately:

6) Set program mode dial to U1 (U2).

7) Show menu with button MENU.

8) Set Date Format, Date and Time.
Menu Tools | 1 | Language, Date Adjustment.
Date Format, Date, Time, Settings Complete | OK.

9) Back to menu with button MENU.

10) Save this in the already existing USER1 (USER 2) setting.
Menu Rec. Mode | 4 | Save User Mode | Check saved settings | USER 1 (USER 2) | Save | OK.

With this recipe the screen stays off when the camera is turned on and also when a picture is taken.
Switching off the screen can be assigned to USER1 or USER2 for this purpose, or it can be integrated in already existing USER1 or USER2 settings.
The menu screen can be accessed at any time with the MENU button, as usual.
You can quickly return to 'normal' by selecting another program with the mode dial.
Forum: Mini-Challenges, Games, and Photo Stories 10-02-2013, 07:44 AM  
Minimalism-Post your minimalist images here
Posted By Kobayashi.K
Replies: 2,302
Views: 220,010
May I also add some photo's here, to support noelcmn for bumping up this thread :)
I am a traditional minimalist (Minimalism - Wikipedia, the free encyclopedia), so IMHO not all posts here qualify as minimal but alas it was already bbluesman's conclusion after a couple of posts in 2009 that it "means something different to everyone".

CC66 - 165g
Text from a Pringles can, 25x25 mm.
Fill color for the text changed.




DE9A - Snow
Pattern from a Pringles can, 18x18 mm.
Color of red dots changed to light blue.

Forum: Site Suggestions and Help 06-25-2013, 09:24 AM  
Question Close, deactivate, delete account
Posted By Kobayashi.K
Replies: 16
Views: 3,162
Users should be able to delete their account IMHO. It is the user to determine if an account is a benefit, not PentaxForums. I guess this is mainly a problem for PentaxForums, because it has only a limited number of active users. It would look rather awkward when the larger part of its 50,000+ members shows up in (old) posts with an 'Unsubscribed' label.
Europe is working on a 'The right to be forgotten' proposal exactly because social sites are reluctant to allow deleting accounts. Its better for PentaxForums to have such an option in place not to look disagreeable or before they are forced by law later on.
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