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Forum: Pentax Camera and Field Accessories 15 Hours Ago  
Ball head as a leveling base
Posted By Papa_Joe
Replies: 16
Views: 432
There are tripods with a leveling base built in. No need for exact leveling with the legs.
Or a tripod/head with an built in circular level, that works on the tripod and not on the head. There is one in my SLIK tripod, which makes leveling with the legs very easy.
Forum: Pentax DSLR Discussion 04-29-2021, 08:25 AM  
pentax camera
Posted By Papa_Joe
Replies: 38
Views: 1,040
My parents gave me a Revueflex AC-2 (Chinon CE-4) for my 16th birthday, which was a great camera, with wonderfull ergonomics. I used it with it's 50/1.7, a Vivitar 70-205/3.8 and a M 35/2.8 for about 10 years, until I dropped it onto an italian marketplace. It was then replaced by a used near mint Pentax Super A.

I went digital in 2004 with a Nikon Coolpix 5000 which I used for some years until I bought a used ist D* in very nice condition.
Forum: Pentax DSLR Discussion 04-27-2021, 12:43 AM  
Pentax k70 vs Pentax kp vs pentax k1 mark 2
Posted By Papa_Joe
Replies: 52
Views: 1,618
This!

If you are in need of a fast camera the K-1 is to be ruled out. And fast is depending on how you work as well. While the K-1 is praised by landscape photographers and depised by those working in sports, wedding photographers have split views. Some pray it as a very ergonomic tool, some say it is still to slow when things get hectic.
It would suggest, search the internet and youtube, you get al lot of enlighting information about the K-1 especially.

Also I am a proud owner of a K-70, I would never use the camera as a pro, because the operation is mainly via the screen, which really slows you down. If you are going pro I would go for the camera with the best ergonomics which (beside the K-1) is the K-3. K-3 iii or the K-3ii would be my first choice.
Only if you really need a tiltable screen you should look at the K-1 and the KP.
Forum: Pentax SLR Lens Discussion 04-27-2021, 12:25 AM  
Test of 4 lenses at the wide end
Posted By Papa_Joe
Replies: 25
Views: 1,299
All the lenses you tested are on a high level IQ wise. Even the 18-55 is a very good kit lens.
All these lenses have there issues on the short end.

Thus you are testing a very good lens (Sigma) on it's sweet spot against a very good lens (16-85) on its weak side. Outcome is predictable, don't you think so?
On the other side, if the image you posted for the 16-85 at 16 mm and 3.5 is exemplary for the whole of the test images taken with it, I would say you have issues with your copy of the lens. Might it be decentering or focusing.

Here are the tests opticallimits did with the lenses. Mind you they are all taken with different megapixel sizes and the Sigma 10-20 is tested with a Nikon.
But the performance of a lens scales rougly with sensor size, i.e. if you get 80% of possible resolution on a 10 MP sensor you will get something a bit below of 80% on a 16 MP sensor with a good lens.

Pentax SMC-DA 18-55mm f/3.5-5.6 AL - Review / Test Report - Analysis
Pentax HD DA 16-85mm f/3.5-5.6 ED DC WR - Review / Test Report - Analysis
Sigma AF 10-20mm f/4-5.6 EX DC HSM - Review / Lab Test Report - Analysis
Forum: Troubleshooting and Beginner Help 04-26-2021, 12:53 AM  
K220D - Too limited ou possible to "upgrade"?
Posted By Papa_Joe
Replies: 24
Views: 693
I would suggest to buy a macro lens first and try it on the K-200D. The camera produces very good colors, so if the pictures ares sufficient for you you can save some money.

On the other hand the latest Pentax cameras produce much better images out of the camera, so if you do not develop your pictures on a computer a new camera is a worthwhile upgrade.

I would reommend a Pentax with an articulated screen for macro photography as it makes taking pictures in low level positions much easyer. Those are the Pentax KP and the Pentax K-70 at current in APS-C.
Forum: Digital Processing, Software, and Printing 04-26-2021, 12:37 AM  
What laptop do you use for Photography?
Posted By Papa_Joe
Replies: 32
Views: 969
I can for sure say the integrated graphics can not compete with a dedicated desktop graphics card.

I am currently using a ThinkPad L590 on a NEC MultiSync EA244WMi in my office at home. I had an other ThinkPad before. The current laptop is connected by HDMI the former had a display port. Both laptops produce a very good image for office work. Best I ever had in 30 years from my employer.

But if I switch to my home desktop with an ASUS Nvidia 750Ti graphics card (via DVI-D). You just can throw away those two laptops output.
Much better sharpness. Excellent colors. One might think digital ist digital, but it is night and day.

I have my own old Dell with an IPS screen and an onboard graphics. Better then those two ThinkPads, but still can't compete with my 750Ti on the MultiSync.
My son has an ACER Laptop with an Nvidia 850M and an IPS screen - Very good image quality ont the laptop. But I haven't used it on my NEC until now. Comparable technology as on my laptop, but who can say if the laptop digital out can compete with the desktop digital out. Some cheap parts might destroy the thing.

Personally I am using a 15 year old desktop with 24 GB RAM a 3.8 GHz twin core IBM and the above mentioned for my image database. Much better ergonomics than a laptop in terms of screen size and quality.
Forum: Pentax SLR Lens Discussion 04-21-2021, 06:49 AM  
Pentax vs Tamron budget 135mm MF
Posted By Papa_Joe
Replies: 23
Views: 656
For Flowers and insects you have to add a set of extension tubes, as the M 1:3.5 135 mm has 1.5 mtr. nearest focusing distance.
And you have to stop it down to 1:5.6 at least. The K 2.5/135 mm is much better wide open, but not so cheap.


I would think about a telezoom with a better focusing distance as the A 70-710/4.0 or its successor the F 70-210/4-5.6. With a minimum focusing distance of 1.2 mtr. and 200 mm focal lenght you get into 1:4 without any additional equipment and you have an lens supporting all the automatics.
The A 70-210 is available and inexpensiv.
Forum: Pentax DSLR Discussion 04-15-2021, 03:16 AM  
K80?
Posted By Papa_Joe
Replies: 37
Views: 1,611
If you need a good bargain DSLR buy the K-70. There is nothing wrong with it. Especially it's IQ is excellent and I do not think there is a reason to buy the K-P, K-3 iii to get their better image quality, with the sole exception of high ISO. I would say for every day photography the K-S2 will produce excellent pictures as well.


The difference between the K-70 (and K-S2) and the upper line for me is more about modern AF, handling (third knob, shoulder display, joystick, etc.), special features, speed, durability. And the K-70 is very good in these areas either. It is just not top notch. If you need a camera to do the job, the K-70 is yours. And in some special scenarios I would even suggest to buy the K-70 (articulated screen I look at you).
Forum: Pentax DSLR Discussion 04-15-2021, 12:16 AM  
K80?
Posted By Papa_Joe
Replies: 37
Views: 1,611
Probably the next camera from Ricoh will be the follower of the K-70 only because there has to be a product cycle. The main upgrad will be the AF System from the KP/K-3 and probably the sensor from the KP. Ricoh can not upgrade the two digit line any further because it is allready to close to the flagship line in terms of IQ and other features. The K-70 is no entry level camera, by IQ and features it is a upper middle grade camera.

I just mused a bit about if Ricoh will built a KP with a more pronounced grip as follow up for the K-70. But that would be far to close to the flagship line, what do you think?
But I think we all agree, there will be only two camera lines in APS-C in the future. No cheap entry level any more. No more experiments like the K-01, K-S1 and yes, the KP.
Forum: Pentax DSLR Discussion 04-14-2021, 11:53 PM  
All I want from Pentax is
Posted By Papa_Joe
Replies: 58
Views: 2,176
The istD* and the ist DL both had an additional photocell build in. Thus a camera with the old TTL mode is more complicated to built without any real advantage for Pentax. P-TTL (or however they called it) was implemented by all the competitors and sold as a new feature, better then the old TTL. So why should Pentax built a camera with something that only is usefull with old flashes (they want to sell new ones I guess), has been seen as an outdated technoloy on the market from start on and makes building the camera more comlicated and expensive?
Forum: Pentax DSLR Discussion 04-12-2021, 07:27 AM  
Point and shoot vs superzoom
Posted By Papa_Joe
Replies: 19
Views: 1,074
Thank your for the explanation UncleVanya! I'am sorry for the misunderstanding :o. I am fully aware of the limitations a smartphone has. I just wanted to know what features the OP misses on a cellphone, or the other way round, which features his superzoom or compact should have. I feel myself completely lost, when I get so small an information about what the camera should be capable or what for which subjects it is to be used.

Perhaps I should have written: There are sure superzooms or compacts that are able to deliver excellent image quality (under certain restrictions), but we can not recommend any without further information.

By the way - my Galaxy S5 has way better ergonomics then my Nikon S1 :fedup:. Pentax engineers would have created a better interface within 15 minutes.

Just looked up the Panasonic lx-7. Nice camera!
Forum: Pentax DSLR Discussion 04-12-2021, 02:23 AM  
Point and shoot vs superzoom
Posted By Papa_Joe
Replies: 19
Views: 1,074
If size and weight of camera plus superzoom is no issue for you while biking, I would support the 18-250 mm. Which is a quite good performer over all. The 18-135 has strengths and it has flaws, that make it impossible to recommend it as a universal lens.


If size and weight matters a point and shoot is a capable solution. But why don't you use your smartphone?
Forum: Pentax SLR Lens Discussion 04-07-2021, 09:46 AM  
SMC Pentax-M* 300mm F4
Posted By Papa_Joe
Replies: 10
Views: 575
The A and the M version are optical the same.
They are also identical in filter thread, length and diameter. The A version is 25 gramms heavier.


They look like twins.
Forum: Pentax DSLR Discussion 04-06-2021, 04:28 AM  
Rear flip viewfinders
Posted By Papa_Joe
Replies: 65
Views: 2,439
There is one camera in the Pentax line up that is the best camera on the market for astrophotography.

It has

- fully articulated screen
- night modus for the screen
- astrotracer compability
- excellent IQ at ISO 1.600

Make an educated guess.

There is another one which has been called "astophtographer friendly" by Adam. Make another guess.

A tiltable screen is a huge advantage in astrophotography. As it is in other fields of photography as well. The K-3iii is probably the best Pentax DSLR ever, but I guess there are a lot of people who will not buy it because the lack of an even tiltable screen makes it only the second best. I'am sure the people at Ricoh new that, so it was a choice in exchange for other features, not so obvious. I just hope the choice pays of for Ricoh.
Forum: Pentax DSLR Discussion 04-06-2021, 03:34 AM  
Need Advice from Pentaxians
Posted By Papa_Joe
Replies: 43
Views: 1,550
Obviously the most useful improvement on the gear of the OP would be a replacement of the 18-55.

There is no use in replacing a 16 MP camera with a 36MP camera, when using a mediocre*) lens, that was not good enough for my old istD* (6 MP).

My replacement for the 18-55 ist still working on my K-70 (24 MP) with very good results.
Forum: Pentax SLR Lens Discussion 03-26-2021, 01:40 AM  
Pentax rear converter (teleconverter?) question(s)
Posted By Papa_Joe
Replies: 23
Views: 1,125
Concerning a longer lens, I would suggest to read this thread and name a lens as well.

Help choosing longer lens, on a budget. - PentaxForums.com
Tokina 400mm f5.6 ATX AF Lens Reviews - Tokina Lenses - Pentax Lens Review Database

Price is reasonable. IQ is good. You just have to find one.
And you can use the 1.4 teleconverter with it.

What do you need the longer focal length for?
Forum: Troubleshooting and Beginner Help 03-25-2021, 10:08 AM  
K10D lens Manual or auto?
Posted By Papa_Joe
Replies: 27
Views: 921
Nice picture. From the EXIF data of the picture I can tell you, that it should be an autofcus lens.

It should be this one: Sigma 18-50mm F3.5-5.6 DC Lens Reviews - Sigma Lenses - Pentax Lens Review Database

Bad news is, it is not regarded very highly. Good news is, it is better then the Tristar probably.

Still better, it is better then no lens and good for a start, so do not worry. First thing will be to learn how to use the K-10D which is not a bad camera.
You have been using M - manual mode. You should use it in auto mode first. Set the camera as follows and get out and do do some pictures.
If you feel confident explore the camera further. You can always come and ask for more information,
Reading the manual will give you faster results eventually.


Set the wheel on the left on the top of the camera to the green symbol. The camera will then do a lot of things for you. Mainly select the aperture and time for a correct exposure,
Set the switch under the wheel to the green symbol, which is matrix metering. Should work better then weighted metering (the next to the left).
Set the switch on the left side of the bayonet to AF.S - This is single shot auto focus. Be prepared, that you can only take a picture if the camera can get the lens into focus,.
Set the wheel around the "OK" button on the back to the most left green symbol. The camera will try to figure out which AF point to use. This will probably go wrong quite often. I fto an anoying degree, switch to the symbol on the right, where you can only use the center AF point.

Set the switch on the back under wheel with the "OK" button to "ON". This will turn on the shake reduction.

Basic settings for beginners done. Now choose your subject. Press the shutter slightly down. The lens should go into focus, which is indicated by a red flash in the viewer, which will showe you the focus point and maybe a beep. Press shutter fully down. Picture should be okay.

I would love to tell yo a bit more on white balance and ISO settings, but the batteries of my K-10D are empty. And when I rember it right you can not change ISO in the green mode. You have to switch to "P" program mode, which is essentialy the same, with some freedom.


Take pictures! Have fun!
And welcome to the forum!
Forum: Troubleshooting and Beginner Help 03-25-2021, 09:27 AM  
SR and zoom lens what do you set SR for ?
Posted By Papa_Joe
Replies: 10
Views: 542
My K-70 manual reads "select the focal lenght the zoom lens is set to".
Instead I switch of the shake reduction. I don't want to use an unreliable system, i.e. one I can not predict its outcome.
Forum: Troubleshooting and Beginner Help 03-22-2021, 02:12 AM  
Pentax P30t SLR Film Camera Film Lever
Posted By Papa_Joe
Replies: 10
Views: 403
I would suggest to check that the film is properly transported in the way DonV described, with every new film loaded into the camera. The Pentax ME for example has a film transport control, but I always prefered to watch the rewind knob spinning.

In addition, I always watch the first three quaters of the first lever action, at least until the film lies flat in the camera, with the back of the camera open. When the film winds up nicely until then, it will wind up till the end of the roll, most probably.

At the film end, there will be 1 to 2 additional shoots available, but if you count more then 39, you probably do not have an exposed picture at all. Or you teared the film apart with brutal force but you will know that for sure.
Forum: Pentax SLR Lens Discussion 03-22-2021, 01:36 AM  
Fixing M42 Aperture Alignment
Posted By Papa_Joe
Replies: 9
Views: 491
First of all, welcome to the forum!

As Steve showed very nicely, this is a general issue of the M42 mount, you can not aviod at all. Some lenses might be aligned, as i_trax has mentioned, but this will only work for a fixed camera and lens combo. It will not work with another camera body and most lenses will not be able to be aligned.

This issue is one of the reasons why bayonet mounts were introduced. They provide a defined position of the lens on the camera body, which is essential for installing a working interface between lens and body.
Forum: Pentax K-3 & K-3 II 03-18-2021, 02:14 AM  
Aftermarket focusing screen
Posted By Papa_Joe
Replies: 11
Views: 820
I bought a Nikon K3 based screen for my K10D some years ago, which is now sitting in my istD*. I never had metering problems with matrix or center-weighted metering. I hoped for a bit overexposure, as I had the exposure compensation on +0.5 EV as standard on my K-10D but it turned out there was no visible difference at all.

It might be another cup of tea with the newer DSLR. My K-70 has a much brighter viewfinder, i.e. focusing screen and it tends to overexposure in highlights.

Concerning the usefullness of splitprism focusuíng screens. In the end it turned out, that my K-10D was faulty. The sensor is probably misaligned. The split screen and the PD-AF always were in focus at the same time, given the fact that the PDAF is not overly accurate, but the pictures were not. On the istD* the focusint screen gives minimal other readings at close range and I am not sure which one is the right one, as in practice you can't see any differences in the pictures. I usually trust the AF. There was even no visible difference between PDAF and focusing screen when using my Sigma Art 35mm/1.4 wide open on the istD*. Please remember the istD* has only 6 MP so pixel peeping is not as unsettling as on my K-70.

On my K-70 using the PDAF (with the central 2.8 sensor) and focusing with the standard focusing screen gives no visible differences in accuracy with the Sigma 35/1.4 wide open. Thus I will not buy a additional focusing screen for my K-70. It just ís not necessary.
Forum: Pentax SLR Lens Discussion 03-15-2021, 05:01 AM  
Fast lens for APS: Pentax-DA 50mm F1.8 vs. FA 50mm F1.4
Posted By Papa_Joe
Replies: 37
Views: 1,755
Your price range is quite limiting. Fast lenses do not come with a budget price usualy.

That said, within your pirce range you might get a used Pentax FA SMC 2.0/35 mm or a used Sigma 1.4/30 DC HSM.
Forum: Photographic Industry and Professionals 03-12-2021, 04:15 AM  
Funny brands names
Posted By Papa_Joe
Replies: 16
Views: 966
Your fault that you asked, as you now will get some unasked information.:)


Asahi Kōgaku Kōgyō Kabushiki-gaisha (in english Asahi Optical Co., Ltd.) bought the brand name "Pentax" in 1957 from Pentacon for their first camera with a pentaprism. The former cameras were named "Asahiflex". The brand name Pentax is derived from Pentaprism-Contax, I come to this in a minute. My guess ist, that Asahi wanted a more international sounding brand name and the better when it sounded like "Contax" at the end.

Now, why was Pentacon the owner of the brand name "Pentax"? Because they where not allowed to use the brand name "Contax" despite building a Contax Camera with a pentaprism. The brand name "Contax" belonged to Zeiss in the federal republic of germany (aka west germany). While "VEB Pentacon Dresden" in the democratic republic of germany (aka east germany) was the owner and operator of the plant where Zeiss Ikon built the initial Contax cameras. As they wanted to ship their cameras to the west, they had to register new brand names and these where "Pentacon" and "Pentax" both derived from "Pentaprism-Contax". One could say Pentacon got the first part of "Contax" and Asahi the last. I leave it to you who had the better one
Forum: Pentax SLR Lens Discussion 03-11-2021, 01:59 AM  
Stuck indoors with a new fish eye lens - what to do?
Posted By Papa_Joe
Replies: 19
Views: 876
A fisheye has a superior projection over rectilinear (i.e. normal) lenses of the same focal length, when it comes to close subjects to the border of the image. You can see this quite good on the pictures above, namely the one of bobbotron with the dogs. A rectilinear lens would stretch the white dog to a unnatural length. We do not notice this anymore, as we are very used to the effect. An fisheye gives you a much more natural view on subjects at the border (besinde straight lines). I tried out my 17 mm Pentax fisheye against my Tamron 17-50 at the same focal lenght some days ago. I wanted to know, if the fisheye has a wider field of view on a crop camera (it doesn't). But I found the pictures of our living room giving a much more natural feeling over the rectinlinear lens, although at 17 mm the stretching of the linear lens isn't overly pronounced. I also used the Fisheye on full frame (film) to take pictures of my son and his friends climbing in our (very lowely) apple tree some years ago and those close pictures do look a lot better with the fisheye, then with a rectilinear lens (no strait lines at all in the picture). Not to say, that there would have been no rectilinear lens to get all the boys onto film from this distance.

I think taking photos of dogs noses does not do justice to the possibilities of a fisheye at all. All of the very nice pictures above prove this. My favorite is the cat!
Forum: Pentax SLR Lens Discussion 03-11-2021, 01:33 AM  
Any idea, what this lens is?
Posted By Papa_Joe
Replies: 9
Views: 635
This lens is around since the 80' and has been sold under a lot of brands. It should have an engraving in the front ring around the front lens element, where you can read the focal length and the brand. And it is surely a 500 mm, as it has max aperture 8. There are 400 mm of the same make, but theses start at f .5.6. And yes, it has an T2 mount.

I have the very same lens, bought in the mid 80' for 125 EUR (then still DM). It was tested with various other lenses of this focal length by the german magazine colorfoto and proved to be quite decent, if I remember right on par with the Tamron 8.0/500 reflex lens. My own experience is that the Tamron is still a bit better. On todays digitals I would say decent lens, but not good. By the way, the test was won by a Zeiss 8.0 500 mm reflex lens, which left behind all the other lenses by far and costed EUR 8.000,- , which wasn't affordable for most professionals at that time either. Second was a Leitz Telyt.

User reviews on pentaxforums can be found here: Pre-set (Quantaray, Kimunor, Five Star, etc.) 500mm F8 Lens Reviews - Miscellaneous Lenses - Pentax Lens Review Database
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