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02-21-2016, 03:51 AM   #46
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Don't understand why you want to limit yourself by only looking at lenses currently in production, unless of course, you are planning on making a separate thread for discontinued lenses for full frame format.

If I was going to buy the K1 I would want to know every lens I can buy, or at least the great ones. I just want the best damn lens I can get my hands on for reasonable cost. Since when did Ebay not count as a source for quality glass? I have no problem buying glass second hand.

The 24mm F2.0 is very high on my wish list. It's no longer made, but that's irrelevant. I'm confident I can score one in good condition on Ebay. I had to do so much research to find this one. It's hard to find a good fast prime for K-mount that gives the pop that I want. All the good wide angle primes Pentax offers are F3.2 or F4.0 which is just unacceptable in 2016.


Last edited by Mahadragon; 02-21-2016 at 03:57 AM.
02-21-2016, 03:54 AM - 1 Like   #47
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QuoteOriginally posted by Mahadragon Quote
Don't understand why you want to limit yourself by only looking at lenses currently in production
If this is to be a list of every K mount lens that has ever existed, this thread could conceivably be an unfinished work for several years. I think Class A stated his objective quite clearly:

QuoteOriginally posted by Class A Quote
The motivation of this list is twofold: 1)Provide a resource for anyone interested in looking which FF lenses are ( currently) available for the K-1, and 2) dispel the myth that the K-1 is lacking a proper FF lens selection.
02-21-2016, 05:11 AM   #48
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QuoteOriginally posted by Adam Quote
Upon doing a little bit of research, it looks like there are at least 5 different options from LensBaby in the K-mount.
Yes, there are.

The only model that I could confirm to be FF is the one I listed, though (Velvet 56). There might be more, but for some of the others I found evidence (in the FAQ) that they are only APS-C lenses.
02-21-2016, 02:39 PM   #49
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QuoteOriginally posted by Class A Quote
Yes, there are.

The only model that I could confirm to be FF is the one I listed, though (Velvet 56). There might be more, but for some of the others I found evidence (in the FAQ) that they are only APS-C lenses.
It looks like the fisheye barely even covers APS-C, lol. However, it seems that the interchangeable optics for the Composer II do cover FF fully, albeit with prominent softness beyond the APS-C area.


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02-21-2016, 04:34 PM   #50
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QuoteOriginally posted by Adam Quote
it seems that the interchangeable optics for the Composer II do cover FF fully, albeit with prominent softness beyond the APS-C area.
isn't that the point of lensbabies?
02-21-2016, 05:39 PM   #51
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QuoteOriginally posted by Mahadragon Quote
Don't understand why you want to limit yourself by only looking at lenses currently in production, unless of course, you are planning on making a separate thread for discontinued lenses for full frame format.

If I was going to buy the K1 I would want to know every lens I can buy, or at least the great ones. I just want the best damn lens I can get my hands on for reasonable cost. Since when did Ebay not count as a source for quality glass? I have no problem buying glass second hand.

The 24mm F2.0 is very high on my wish list. It's no longer made, but that's irrelevant. I'm confident I can score one in good condition on Ebay. I had to do so much research to find this one. It's hard to find a good fast prime for K-mount that gives the pop that I want. All the good wide angle primes Pentax offers are F3.2 or F4.0 which is just unacceptable in 2016.
There's another thread more to this philosophy, though at this time it only considers Pentax lenses.

One of the hallmarks of PF is that the members spend their own time doing this kind of research and making these threads. Sometimes they become sticky. Sometimes they become Articles. Sometimes they become a Forum or sub-Forum. That kind of idea goes back to the Pentax Discuss List (our member PDL), from which such websites as Boz Dmitrov's K-mount Page, Stan's Pentax Photography, J. Colwell's SPLOS database pricing list (actually, look that up - it's a good starting point for your idea), Die Cast Pro and quite logically PentaxForums originated, as well as dozens I haven't named. These things happened because people decided to do them, Many people here helped create the support infrastructure, the databases, write the articles and support the Forum voluntarily.

IMHO a separate thread listing every single non-Pentax lens, not in production available for purchase anywhere in the world is a great idea.

Last edited by monochrome; 02-21-2016 at 07:07 PM.
02-21-2016, 06:44 PM   #52
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QuoteOriginally posted by Digitalis Quote
isn't that the point of lensbabies?
Yup, exactly. It's just way more prominent beyond the APS-C circle.

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09-22-2016, 12:20 AM   #53
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I have added three Irix lenses and a number of Samyang lenses.

Any recent additions that I missed (e.g., Photokina announcements)?

06-27-2017, 04:24 AM - 1 Like   #54
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@Class A: a few more (manual focus) lenses to add to your list.

1/ Dongzheng Optics Kerlee 35 mm f/1.2

Dongzheng Optics Kerlee 35 mm f/1.2 - PentaxForums.com

2/ Lensbaby Velvet 85mm f/1.8

Lensbaby Velvet 85mm: First Impressions - ALC

Lensbaby Velvet 85 85mm f/1.8-16 Lens for Pentax SLR and Mirrorless Camera

3/ Venus Optics Laowa Zero-D 12mm f/2.8

4/ Zhong Yi Optics Mitakon 20mm f/2 4.5x Super Macro

5/ Zhong Yi Optics Mitakon Creator 35mm f/2

6/ Zhong Yi Optics Mitakon Creator 135mm f/2.8 version II

7/ There are also the so-branded Meyer-Optik Görlitz lenses...

- Lydith 30mm f/3,5
- Trioplan 35+ f/2.8
- Trioplan 50mm f/2.9
- Primoplan 58mm f/1.9
- Primoplan 75mm f/1.9
- Trioplan 100mm f/2.8

8/ ...and the KMZ production, sometimes difficult to buy outside Russia (some lenses are easily available though):

- MC Zenitar-K 16mm f/2.8 fisheye
- MC Zenitar-K 20mm f/2,8
- MC Zenitar-K 1:2.8 28mm
- MC Zenitar-K 50mm f/1.4
- MC Zenitar-K 50mm f/1.9
- MC Zenitar-K 50mm f/2
- MC Zenitar-1K 85mm f/1.4
- Helios-40-2 85mm f/1.5
- MC Apo Telezenitar-K 135mm f/2.8
- MC Apo Telezenitar-K 300mm f/4.5
- MC Variozenitar-K 25-45mm f/2.8-3.5
- MC Variozenitar-K 35-70mm f/3.2-4.5
- MC Variozenitar-K 35-105mm f/3.5-4.5
- MC Variozenitar-K 70-210mm f/4.

Last edited by Mistral75; 06-27-2017 at 07:11 AM.
06-27-2017, 06:18 AM - 1 Like   #55
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Another one: Lomography Daguerreotype Achromat 64mm f/2.9 Art.

Daguerreotype Achromat 2.9/64 Art Lens - Pentax K Mount ˇ Lomography Shop
06-27-2017, 08:02 PM   #56
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Thanks heaps, Mistral75!
06-27-2017, 08:05 PM   #57
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I'll add the lenses you listed as soon as possible. I currently cannot edit the original post (edit privileges expired).

EDIT: Done. Thanks, @Adam!

Last edited by Class A; 06-28-2017 at 01:50 AM.
07-02-2017, 09:48 AM   #58
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Counting lenses with "bit of vignetting" does not qualify in my opinion. DA*55, DA*60-250 and DA560 should not be on the list.
DA560 was presented as DA only and you don't want a 5k$ lens to not be decent at teh frame edge. DA*60-250 may work if you come from ASPC and need glass to go with. DA*55 only works stopped down.
Sold my 55 after getting the K1 and I am not at all interested in the DA560 - but would be in shorte a D-FA version.
07-02-2017, 09:57 AM   #59
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The DA 560mm is officially a FF lens. Do you have any proof that it's not decent at the frame edge?
07-02-2017, 10:02 AM   #60
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QuoteOriginally posted by zapp Quote
Counting lenses with "bit of vignetting" does not qualify in my opinion. DA*55, DA*60-250 and DA560 should not be on the list.
Why not? As long as people know about it, then they can make an informed choice.
I've seen lots of people on this forum who are very happy with the DA* 55mm on FF. Not to mention that most superfast lenses in that range have some degree of vignetting on FF. Nikon, Canon, you name it. Even back in the film days vignetting was a known lens property.
The 60-250mm's optical patent is actually FF, but the physical lens (barrel, rather) has a back baffle that seems to limit some light - there are threads of people removing it. So while it might not be FF-optimized straight out of the box, it would still be a bit unfair to call it an APSC-only lens. To me, and APSC only lens is something like DA 21mm or some of the DA zoom lenses that literally don't shine any light onto the edges of an FF sensor.
DA 560mm is a special lens, and if anyone pays its full price, I expect they did some research and know exactly what kind of performance they are getting. I check multiple reviews of any cheap little lens that I get and they don't come anywhere close to the DA 560mm price range. Even if you add their costs together!

But hey, you are entitled to your opinion and I hope anyone that buys any lens will do their research and get the lens that they want.

Last edited by Na Horuk; 07-02-2017 at 10:28 AM.
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