Holger Bargen

Lives in Germany Germany
Works as a biologist
Joined on Jan 9, 2003

Comments

Total: 168, showing: 1 – 20
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On photo Galah's morning thirst in the My Best Photo of the Fortnight challenge (19 comments in total)

What a great photo! Congratulation for winning the contest!

Link | Posted on Nov 9, 2021 at 18:16 UTC as 3rd comment
On photo Man of Highland in the People Photography 2011-2020 challenge (11 comments in total)

Hi Xiaomao,

it is always such a joy to look at your photos. Not just the birds ... Thank you for sharing your photos with us - and congratulation for winning the contest!

Best wishes
Holger

Link | Posted on Oct 23, 2021 at 09:49 UTC as 6th comment | 1 reply
On photo Already occupied ... in the Ricoh Lens - Specific Equipment Challenge challenge (3 comments in total)
In reply to:

PentUp: Fantastic image Holger

Thank you, PentUp!
The lens build by Ricoh was constructed according the design of the Kiron / Lester A. Dine which was one of the best macro lenses of that time.

Regarding the photo I like that meeting of a non-apis bee and a honeybee. Both are important pollinators and it is not well know if they compete with each other or if they use different niches in time and space. I have a few photos where these insects meet - and not always the larger honeybee is the winner.

Link | Posted on Oct 19, 2021 at 11:27 UTC
On photo Fishing in Morning in the A Big Year - Birds 2021 challenge (6 comments in total)

Dear Xiaomao,

congratulation for winning the birds-photography-contest with a great photo!

I know you from Pentax forum. Saw you switched the system. Glad to see that you don't left photography and are still shooting great photos and sharing them in this forum. I remember so many very nice photos you took!

Link | Posted on Sep 29, 2021 at 16:36 UTC as 1st comment | 1 reply

It is important to have good third party ootions for flashes. Metz stopped making flashes after the company was not able to survive financially. I liked Metz flashes and still have one. However, if I would need a new one it is nice to have a third party option that supports the cameras at a high technological level.

Link | Posted on Aug 26, 2021 at 20:07 UTC as 9th comment | 1 reply
On article Pentax K-3 Mark III added to studio test scene (385 comments in total)
In reply to:

Holger Bargen: My theory regarding the problem:

The problem arises with the 100 ISO and 200 ISO and exposure times of 1/30, 1/60 or 1/80 or something around this value.

The reason could be the exposure time followed by shutter shock issues - or side effects of different processing at lower ISO. I think the second hypothesis is true:

The Prime V machine plus accelerator does the noise removal and sharpening. For K3iii there are two ways of processing: For most cases the the processed photo will be the final output. If the parameters guarantee no problems with nosie, the unprocessed photo will be given as output. ISO 100 and ISO 200 will be settings where we get unprocessed photos (no noise removal and sharpening) - and these are the photos where we see the problems.

I think the lens is the problem and the only photos where the problem becomes visible are those at ISO 100 and ISO 200 as Prime V does not correct. Thus, not camera shake but an open window for lens problems due to missing processing!

I am sorry - I can't try it as I did not buy the camera so far. At them moment K1 serves me well. I was tempted. However, at the moment there is a lot to da at my job and I don't have much time to learn into the new camera.

Regarding my thoughts at the Pentax forum here at dpreview other people who have the camera don't think my hypothesis is useful.

Even if this problem should carry on the camera would be still of interest for me. For landscape and all other jobes where exposure times in the range wiht the problems would be needed, K1 would be my preference. K3iii is the first camera body with optimal support for taking photos of animals moving like birds or insects. I prefer exposure times with minimum of something around 1/640 sec to freeze the movement of the animal. Here K3iii has no problem at all.

Link | Posted on Jun 3, 2021 at 19:31 UTC
On article Pentax K-3 Mark III added to studio test scene (385 comments in total)

My theory regarding the problem:

The problem arises with the 100 ISO and 200 ISO and exposure times of 1/30, 1/60 or 1/80 or something around this value.

The reason could be the exposure time followed by shutter shock issues - or side effects of different processing at lower ISO. I think the second hypothesis is true:

The Prime V machine plus accelerator does the noise removal and sharpening. For K3iii there are two ways of processing: For most cases the the processed photo will be the final output. If the parameters guarantee no problems with nosie, the unprocessed photo will be given as output. ISO 100 and ISO 200 will be settings where we get unprocessed photos (no noise removal and sharpening) - and these are the photos where we see the problems.

I think the lens is the problem and the only photos where the problem becomes visible are those at ISO 100 and ISO 200 as Prime V does not correct. Thus, not camera shake but an open window for lens problems due to missing processing!

Link | Posted on Jun 3, 2021 at 15:52 UTC as 21st comment | 4 replies
On article Pentax K-3 Mark III added to studio test scene (385 comments in total)
In reply to:

aiki76: With the K3II you used the same lens, getting same awful results. I have the K3II and I perfectly know its performance at 100 ISO. I'm absolutely sure that the images I get from the camera at 100 ISO are outstanding, clearly better then the results of your studio scene at 100 ISO. So, please, be correct and professional and redo the test with a better lens

The lens was made as portrait lens. The idea of a portrait lens is not extreme sharpness but soft and harmonic rendering. If you want to do a test that gives some insight into the perofmance of a camera and its sensor in terms of sharpness, take a macro lens. If they want something around 50 mm there is a 50 mm Pentax macro lens. Prime macro lenses - almost no matter which brand you take - have outstanding performance in terms of sharpness. This would be a good foundation for testing cameras based on the studio scene.

Please avoid taking portrait lenses for test that aim at resolution! It will always be a missleading approach!

Link | Posted on Jun 2, 2021 at 19:39 UTC
On article Pentax K-3 Mark III added to studio test scene (385 comments in total)
In reply to:

Class A: @DPReview
"Rest assured, this is something we'll be looking at further as we delve further into our analysis for our review."
Why not investigate before you publish the results?

Publishing the results already, suggests you are confident that
a) there hasn't been a mistake on your part,
b) the camera copy you have is representative of what one should expect from a non-defective K-3 III,
c) there is no firmware issue that could be easily fixed, etc.

It is difficult to tell but I wonder whether the kind of blur is consistent with shutter-shock-induced blur. Wouldn't the latter show more of a linear kernel oriented towards one direction?

Furthermore, which RAW converter are you using? It looks like it has not been adapted to work with the K-3 III yet. There is a magenta cast that could also be seen with initial K-1 II support and that, to the best of my knowledge, was just caused by inadequate RAW support.

Having little insight into statistics I can tell you, that one single replicate (camera) has absolutely no power to say anything about a camera in general. If I would test a camera and find problems, it would always be a good idea to test (a) different bod(y)ies - if possible from a different batch.

For this reason the actual test tells us nothing at all. We don't know if dpreview managed to get some faulty Pentax gear, again. We don't know if there is a problem with some setting or if there is that serious problem dpreview thinks it found. Lots of people taking photos with their K3iii at the exposure times that seem to have a problem could not replicate the error.

All we can say is: there was a problem found and we have to rule it out. If you want to say anything about K3iii the copy dpreview does its tests with says nothing. They could redo the test with another sample and give their copy to Pentax repair station to check it for defective parts.

Link | Posted on Jun 2, 2021 at 19:31 UTC
On article Pentax K-3 Mark III added to studio test scene (385 comments in total)
In reply to:

Tibor1: Anti-aliasing mode was turned On during the test.

The camera intentionally creates a slight blur by moving the sensor a bit - in order to prevent aliasing.

Regards,

Tibor

Shake reduction is shake reduction and not AA filter simulator.

Link | Posted on Jun 2, 2021 at 19:14 UTC
On article Pentax K-3 Mark III added to studio test scene (385 comments in total)

Problem looks very well known to me: The sharpness at that photo is set to "normal" (visible in the EXIF if you download it). I can't remember any Pentax camera which produced useful and sharp (for pixel peeping) photos at this setting. Turn the setting up to +3 or even +4 and you will get very good sharpness and most likely not any hint on shutter shock or something like that. It's a speciality of Pentax cameras you have to know - but if you know it, you get a tool that works very good.

Don't know why Pentax delivers their cameras at this setting. It has some tradition and ends up with ratings like these, that do not reflect the usability of the camera as it was simply used at a setting that is not appropriate for this kind of view on the photos.

Link | Posted on May 31, 2021 at 15:50 UTC as 93rd comment
On article Pentax K-3 Mark III added to studio test scene (385 comments in total)
In reply to:

Richmondthefish: Since no one is reading the article

"Worth mentioning at this stage, however, is the slight (relative) SOFTNESS of the K-3 Mark III at its ISO 100 and 200 settings in our daylight mode in particular. Despite repeated attempts using Live View, the optical viewfinder, mirror lock-up, shake reduction (which isn't recommended for tripod shooting) and of course a self-timer, we were unable to produce a sharp image using the mechanical shutter at these particular settings due to shutter shock."

@Francis85: The actual Pentax cameras don't have any AA filter. The have a setting to mime one (very unlikely - but the dpreview team may check if it was switched ON). Every camera does its processing of the camera signal and every camera also does some sharpening on it. In general, the this shaprening at Pentax cameras is set to very moderate values - more towards the soft side. This is very good if you want to post-prcess the photos as it is always more easy to add some sharpening then to remove it. And it gives also more harmonic prints if you don't need full resolution. The full sharpening is only useful if you need out of camera prints at full resolution. I never was in a situation like that. However, in my cameras the setting for sharpness is lifted to +3 to +5 (from a range -5 to +5) to get a sharpness I like for my out of camera JPGs.

Link | Posted on May 31, 2021 at 15:39 UTC
On article Pentax K-3 Mark III added to studio test scene (385 comments in total)
In reply to:

Richmondthefish: Since no one is reading the article

"Worth mentioning at this stage, however, is the slight (relative) SOFTNESS of the K-3 Mark III at its ISO 100 and 200 settings in our daylight mode in particular. Despite repeated attempts using Live View, the optical viewfinder, mirror lock-up, shake reduction (which isn't recommended for tripod shooting) and of course a self-timer, we were unable to produce a sharp image using the mechanical shutter at these particular settings due to shutter shock."

We have seen complains about problems with sharpness in the Pentax forum here at dpreview, too. However these complains seems to have vanished, after people made a setting in the menu towards more (higher grade) of sharpening. In general, Pentax delivers their cameras with a very soft default setting. Maybe the problems obeserved here could be solved in the same manner.

There were some complains about in-baked noise reduction in the K3 Mk3. However, looking at the Nikon photos just for comparison, there seems to be a much more intense noise reduction at work.

Link | Posted on May 31, 2021 at 15:25 UTC
On article Pentax K-3 Mark III sample gallery (178 comments in total)
In reply to:

left eye: This sample gallery is very disappointing.

My K-5 looked better than these, OOC jpeg with 'Extra-Fine' sharpness and NR OFF.

The standard sharpening radius Pentax uses is rubbish, should not be the default.

Please DPR use 'Fine Sharpness' and turn NR OFF for low-medium ISO, 'Extra Fine' was better still, but not now available.

Turn NR OFF will be a little bit of a problem ...

Link | Posted on May 12, 2021 at 05:45 UTC
On article Pentax K-3 Mark III sample gallery (178 comments in total)
In reply to:

elixer: Thank you for the images guys. If you can look at the 8th image in the gallery of the gentleman taken by Richard, the capture details and the lens details are inconsistent.
Cheers...

Some kind of shaddows from a tree?
If I got the inconsistencies you are talking about, it does not look like a problem of lens or camera.

Link | Posted on May 12, 2021 at 05:43 UTC

I didn't remember taht K-01 was so small! Cute little camera.

Link | Posted on Apr 2, 2021 at 11:38 UTC as 16th comment
On article Pentax K-3 Mark III initial review (879 comments in total)
In reply to:

drummercam: "Perhaps the only question that matters for the K-3 Mark III is: does it offer enough of an improvement to prompt existing Pentax owners to upgrade?"

The designation K-3III implies linearity of development as against K-3, K-3II, but that's not the best framing of the issue. This is a really a new and different camera, and a lot of people already expressed some surprise at the descent of the name. Assessment in terms of "improvement" and "upgrade" gives a reviewer a way to jab the product, especially with that niggling "enough of an" qualifier tagged on. But "not enough of an upgrade" would be a ridiculous way to close any review of this camera. It's different in respects from it predecessors.

We have to wait to which extend the offered improvements work fine out in the field.
If it comes to me, K3iii would be a welcome upgrade to my gear.
I have K1 which offers fantastic image quality - however, it is not on the fast side.

The improvements in terms of speed (AF, burst mode) are welcome and the pixel density is higher compared to my K1, which is welcome for my macro work where I do a lot of cropping.

If I could get these features for FF I would buy it as FF camera. I know that it's easier to build a fast camera with a smaller sensor than with a large one (larger mirror to be moved, at same pixel desitx larger files to be processed and stored). Thus, this could be my camera where speed counts while my K1 is for beauty and bokeh ...

Link | Posted on Mar 31, 2021 at 11:03 UTC
On challenge A long lens [New shot] (9 comments in total)
In reply to:

Tim Reidy Productions: im a bit confused on the rule, good luck with the challenge

Same for me!
A long lens is 300 mm + x for me. The focal range we should deliver is more or less "medium" focal length when I think about my gear.

Link | Posted on Mar 11, 2021 at 18:23 UTC
In reply to:

norman shearer: I guess there's no rush anyway - a later release may improve sales as countries recover from covid pandemic. Those who can't wait can make do with the excellent KP.

For Germany I would guess that now would be the best moment to sell that camera. Most people still have their job and get wages. On the other hand there is not much opption to spend much money for vaccation etc. Banks are flooded with money. Thus, good chance to sell expensive products right now!

Link | Posted on Feb 18, 2021 at 12:48 UTC
In reply to:

PhalaNik: People still buy APC DSLR's why.......

More fun!

Link | Posted on Feb 18, 2021 at 12:44 UTC
Total: 168, showing: 1 – 20
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