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12-02-2015, 12:23 PM   #1
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Which 12/13 mm C/D mount for the Q?

Which C\D Mount lenses with 12-13 mm FL are good for the Q? I see many great lenses that are sharp in the center, but are there any available with sharp(ish) edges on the Q/Q7?

12-02-2015, 01:35 PM   #2
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Many thanks for the answer! Do you refer to the Q or Q7/QS1?


QuoteOriginally posted by Professor Batty Quote
I've got the Cosmicar 12.5mm f1.4 Television lens, it is quite good in the center but falls down on the edges, ditto for the "Omnippon" 25mm f1.4 Television lens and the 9mm f1.4 Fujinon. I've got a 4" f4.5 B&H Telate that is uniform edge to edge, but suffers from diffraction limiting, it is still usable though. None of the D mount lenses I have (and I've got quite a few) are sharp edge to edge, although the 1 1/2" Sun-tel is very sharp in the center—they work pretty well if you are shooting a square format.

I think that you'd have to go with a high-quality C mount lens (Angeineux, SOM, Taylor Hobson, Cine Nikkor, Kern, Wollensak, Schneider, etc) to get edge to edge sharpness. Much more expensive than the 01, 02 or the 06.

Some typical prices: cine nikkor c mount | eBay
12-02-2015, 02:19 PM   #3
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I can tell you this much, for D-mount lenses, the Yashica Yashinon 13mm f/1.4 performs better at the edges than the Kern-Paillard Yvar 13mm f/1.9 AR Visifocus.

https://www.flickr.com/photos/benchan/16791024035/in/album-72157649067206732/

I can post a full-size file if you want to pixel-peep.
12-02-2015, 02:36 PM   #4
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Thank you! What do you think about them? Looking at your Flickr album both seem quite capable (at least) for me.


QuoteOriginally posted by murrelet Quote
I can tell you this much, for D-mount lenses, the Yashica Yashinon 13mm f/1.4 performs better at the edges than the Kern-Paillard Yvar 13mm f/1.9 AR Visifocus.

https://www.flickr.com/photos/benchan/16791024035/in/album-72157649067206732/

I can post a full-size file if you want to pixel-peep.


12-02-2015, 10:42 PM - 1 Like   #5
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QuoteOriginally posted by Piotrek K Quote
Thank you! What do you think about them? Looking at your Flickr album both seem quite capable (at least) for me.
I personally prefer the Kern-Paillard. Something about the colors. Very subjective, however. Both are very nice lenses.

Here are my photos with the Yashica tag: https://www.flickr.com/search/?user_id=34418903%40N00&sort=date-taken-desc&t...f14&view_all=1
And photos with the Kern-Paillard tag: https://www.flickr.com/search/?user_id=34418903%40N00&sort=date-taken-desc&t...cus&view_all=1

You'll notice more photos from the Kern-Paillard, which is evidence of my preference.
12-03-2015, 03:20 AM   #6
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Many thanks it is really usefull!!! ...and one more question - at which F-stops you use theYvar lens?

QuoteOriginally posted by murrelet Quote
I personally prefer the Kern-Paillard. Something about the colors. Very subjective, however. Both are very nice lenses.

Here are my photos with the Yashica tag: https://www.flickr.com/search/?user_id=34418903%40N00&sort=date-taken-desc&t...f14&view_all=1
And photos with the Kern-Paillard tag: https://www.flickr.com/search/?user_id=34418903%40N00&sort=date-taken-desc&t...cus&view_all=1

You'll notice more photos from the Kern-Paillard, which is evidence of my preference.
12-03-2015, 04:51 PM - 1 Like   #7
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QuoteOriginally posted by Piotrek K Quote
Many thanks it is really usefull!!! ...and one more question - at which F-stops you use theYvar lens?
Typically f/4 or f/5.6. I really bad about keywording my photos in Lightroom!
12-07-2015, 01:38 AM   #8
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Many thanks! I just bought cheap mint copy of Kern-Paillard Yvar 13mm f/1.9 AR (36 USD including international shipping). I promise to post some samples and subjective findings after Christmas.

12-19-2015, 02:11 PM   #9
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Yvar 13/1.9 OK! How to use visifocus?

I got and tested the Kern- Paillard Yvar 13 mm 1.9 lens and it seems I will like it. It suprised me having lens elements only at the very end of the lens barrel - so no shade needed. I'm not posting the images as they are really boring test images - I promise to post something later. I would say this lens is usable wide open for low light shots at short/medium distances.

The lens has also funny DOF scale (shown by orange dots, it is called "visifocus"). But as 8 mm camera film size differs from Q sensor sizes I have no clue how much this will be usable. Has someone tried to test this?
12-19-2015, 05:53 PM   #10
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Congrats on getting an Yvar! It's a fun lens. I haven't used the visifocus feature. It seems more like a neat marketing gimmick than actually useful. Then again, I don't use a traditional DOF scale on manual lenses on my Q7 anyway. Looking forward to seeing what you're shooting with the Yvar.
12-27-2015, 03:04 PM - 1 Like   #11
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Yvar 13/1.9

It is a good lens even if it is not corner to corner sharp. But it is sharp in the center from f 1.9 and for me it could be used wide open quality-wise.. Definitely not the lens that I would use as one and only one with my Q, or the landscape lens, but has other properties than my Pentax Auto-110 lenses. It seems to be relatively easy to manual focus (and precise).


Last edited by Piotrek K; 12-28-2015 at 03:09 PM. Reason: No title/lens mentioned
01-01-2016, 10:48 PM   #12
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Last month I ordered and received this lens:C Mount 25mm F 1 4 CCTV 1 2" Silver Lens for Pentax Q Mount Camera Macro Ring | eBay

Today I took a few quick shots and I am impressed: The lens has both, marked f stop ring and marked focus ring.

This is a small salt shaker, about 7 cm high. first image is with the lens alone and for the second one I used the close up ring that came with it.





The images are full frame, no cropping. I used the on board flash
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