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FF lenses for the K-1 that can be bought new
Posted By: Class A, 02-20-2016, 07:36 AM

We all know there is a ton of great FF glass available on the used market that will work great with the K-1.

However, which are the currently available FF lenses (in current catalogues of lens manufacturers) that can be used with the K-1?

Below is a list that started with an initial compilation I did and then attracted a number of later additions by several contributors. There may be still some missing and please post to this thread with information about the lens (but please make sure the lens is in production). I'll then add it to the list.

If you have used any of the listed lenses on the K-1 and find that they do not perform like a proper FF lens, please post to this thread as well. There are some DA (APS-C) lenses included which have been tested as "good for FF" on film cameras but due to differences between film and digital sensors, there may be a few surprises (although I tried to be conservative and only included those that would be true surprises if they failed the "K-1 test".)

Thanks in advance.

P.S.: I realise that there is also another current FF lenses overview but the latter contains discontinued lenses and I think there is value in maintaining a list of lenses that can be bought brand new. Not everyone is prepared to go hunting on the used market. A very nice feature of the aforementioned alternative compilation is that many third-party FF lenses can found organised in roadmap-style charts.

Regarding the suitability of certain DA (APS-C) lenses, I included a few that a truly FF capable based on their design and user reports. There is a far larger number of DA lenses with OK to marginal performance on an FF camera. These have not been included in this list, even though some users may find them acceptable (in particular using the K-1's 1:1 crop mode). A useful resource on the performance of DA lenses on an FF camera is falconeye's "DA lenses on Full Frame: Test shots" thread.

Pentax
Zooms
HD Pentax-D FA 15-30mm F2.8 ED SDM WR
HD Pentax-D FA 24-70mm F2.8 ED SDM WR
HD Pentax-D FA 28-105mm F3.5-5.6 ED DC WR
HD Pentax-D FA* 70-200mm F2.8 ED DC AW
HD Pentax-D FA 70-210 mm f/4 ED SDM WR
HD Pentax-D FA 150-450mm F4.5-5.6 ED DC AW

SMC Pentax-DA* 60-250mm F4 ED [IF] SDM
(some vignetting in particular at 250 but very usable;
some owners replace an internal baffle to reduce the vignetting)

Primes
SMC Pentax-FA 31mm F1.8 AL Limited
SMC Pentax-FA 43mm F1.9 Limited
SMC Pentax-FA 77mm F1.8 Limited


HD Pentax-FA 35 mm f/2
SMC Pentax-FA 50mm F1.4

HD Pentax-D FA* 50mm F1.4 SDM AW
HD Pentax-D FA* 85mm F1.4 SDM AW

SMC Pentax-D FA 50mm F2.8 Macro
SMC Pentax-D FA 100mm F2.8 Macro WR

APS-C Primes, performing well on FF
SMC Pentax-DA 35mm F2.4 AL
SMC Pentax-DA 50mm F1.8
SMC Pentax-DA* 55mm F1.4 SDM
SMC Pentax-DA* 200mm F2.8 ED [IF] SDM
SMC Pentax-DA* 300mm F4 ED [IF] SDM
HD Pentax-DA 560mm F5.6 ED AW


Sigma (as long as current stock lasts)
Zooms
70-300mm F4-5.6 APO DG Macro
70-300mm F4-5.6 DG Macro
50-500mm F4.5-6.3 APO DG OS HSM

Primes
15mm F2.8 EX DG Diagonal Fisheye
28mm F1.8 EX DG ASP RF
35mm F1.4 DG HSM | A
85mm F1.4 EX DG HSM
300mm F2.8 EX APO DG (HSM)*
500mm F4.5 EX DG APO (HSM)*


Tamron
Zooms
SP AF 28-75mm f/2.8 XR Di LD Aspherical [IF] Macro
AF 70-300mm f/4-5.6 Di LD Macro 1:2

Samyang
Primes
12mm F2.8 ED AS NCS Fisheye
14mm F2.8 ED AS IF UMC
20mm F1.8 ED AS UMC
24mm F1.4 ED AS IF UMC
24mm F3.5 ED AS UMC TILT/SHIFT
35mm F1.4 AS UMC
50mm F1.4 AS UMC
85mm f/1.4 AS IF UMC
100mm f/2.8 Macro
135mm f/2 ED UMC
(Most, if not all, of the above are also available as "Cine" lenses that for instance feature click-less apertures.)

500mm MC f/6.3 Mirror (best Samyang mirror lens, decent sharpness but awful bokeh)
500mm MC IF f/8 Mirror
800mm MC f/8 Mirror
500mm MC f/8 Preset (not mirror, a little bit long but very light with decent sharpness)
650-1300mm f/8-f/16 (long and light, almost usefull as a monopod)
(The above comments come courtesy of banep, thanks!)


Schneider-Kreuznach
Primes
PC-TS 4.5/28MM Super-Angulon Tilt/Shift
PC-TS 2.8/50MM Super-Angulon Tilt/Shift
PC-TS 4.5/90MM Makro Symmar Tilt/Shift


Laowa (Venus Optics)
Primes
12mm f/2.8 (Zero-D)
15mm f/4 1:1 Macro
25mm f/2.8 Ultra Macro (2.5-5 x magnification, no infinity focus)
60mm f/2.8 2:1 Macro (2x life size magnification)
100mm f/2.8 2x Ultra Macro APO
105mm f/2 (t/3.2) STF (Smooth Transition Focus)

Irix
Primes
Irix 15mm f/2.4
Irix 11mm f/4
Irix 45mm f/1.4
Irix 150mm f/2.8 Macro 1:1 (Dragonfly)

AraxFoto
Arax 35mm f/2.8 Tilt & Shift
Arax 80mm f/2.8 Tilt & Shift

Meyer-Optik Görlitz (liquidated in 2018, but revived in 2020)
Primes

Lydith 30mm f/3.5
Trioplan 35+ f/2.8
Nocturnus 50 mm f/0.95 (DSLR variant)
Primotar X 50mm f/2.8
Trioplan 50mm f/2.9
Primoplan 58mm f/1.9
Primoplan 75mm f/1.9
Primoplan 75 f/1.9 II
P75 II (advanced version of the Primoplan 75)
Somnium II 85mm f/1.5

Lydith 30 f3.5 II
Trioplan 50 f/2.8 II
Trioplan 100 f2.8 II

Apo-Makro-Plasmat 105mm f/2.7

net SE (-> resurrection of Meyer-Optik Görlitz, Emil Busch and Oprema Jena lenses, liquidated in 2018)
C. P. Goerz Citograph 50mm f/2.8 (currently a Kickstarter project)
Emil Busch Glaukar Anastigmat 97mm f/3.1 (scaled version of the 1910 Glaukar 210mm f/3.1, a lens for 8x10cm and 13x18cm field cameras)
Oprema Jena Biotar 75mm f/1.5 (re-edition of the Carl Zeiss Biotar 75mm f/1.5 (Willy Merté, 1938))


Zeiss (M42 mount lenses; require an M42 -> K-mount adapter, the genuine Pentax adapter supports infinity focus)
ZEISS Distagon T* 2,8/25
ZEISS Distagon T* 2/28
ZEISS Distagon T* 2/35
ZEISS Planar T* 1.4/50
ZEISS Planar T* 1.4/85

Zhong Yi Optics
Primes
Mitakon 20mm f/2 4.5x Super Macro
Mitakon Creator 35mm f/2
Mitakon 85mm F1.2
Mitakon 85mm F2
Mitakon Creator 85mm f/2.8 1-5x Super Macro
Mitakon Creator 135mm f/2.8 version II
Mitakon Speedmaster 135mm F1.4


Lensbaby (as long as stock is available, K-mount discontinued in 2019)
Primes
Burnside 35 (with variable vignetting)
Velvet 28
Sol 45
Velvet 56
Twist 60
Velvet 85
Optic Swap System


Dongzheng Optics
Primes
Kerlee 35 mm f/1.2 (info)

Lomography
Primes
Naiad 15mm F3.5 Art (135° FOV, 1cm close focusing)
Lomogon 2.5/32 Art Lens
Daguerreotype Achromat 64mm f/2.9 Art (info)
Neptune Convertible Art Lens System

Kenko Tokina
Primes
Kenko Tokina 400 mm f/8 N II mirror lens (T-mount with K-mount adapter included).

KMZ (sometimes difficult to buy outside Russia; some are easily available though)
Primes
MC Zenitar-K 16mm f/2.8 fisheye
MC Zenitar-K 20mm f/2.8
MC Zenitar-K 28mm f/2.8
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

Zooms
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 Class A; 12-12-2020 at 05:38 AM.
Views: 31,501
04-22-2020, 04:52 PM   #151
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Too bad that the Lensbaby Velvet 28mm F2.5 will not be available in K-mount.

This lens would not be hard to adapt to K-mount at all so I find it saddening that it apparently isn't worth the effort.

P.S.: I'm not saying that this particular lens is a "must have", I'm raising a matter of principle.

08-24-2020, 02:15 PM - 1 Like   #152
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One more: Meyer Optik Görlitz Lydith 30 f3.5 II available! | News | Meyer Optik Görlitz lenses - Tradition meets innovation
08-25-2020, 03:35 AM   #153
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Thanks!

Should I change the colour of any of the currently greyed out ones?

N.B., while I was at it, I also added the
HD Pentax-D FA* 50mm F1.4 SDM AW, and the
HD Pentax-D FA* 85mm F1.4 SDM AW.

They seemed relevant.
09-22-2020, 06:08 AM - 2 Likes   #154
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This one is missing from your list:

Lomogon 2.5/32 Art Lens Pentax K Mount · Lomography Shop

And this one:

https://shop.lomography.com/en/lenses/neptune-convertible-art-lens/art-lens-neptune-convertible-pentax

09-23-2020, 01:29 AM   #155
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@Flubber Thanks!
09-28-2020, 11:35 AM - 1 Like   #156
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One more:
QuoteOriginally posted by Mistral75 Quote
The Meyer Optik Görlitz Trioplan 50 f/2.8 II was announced today.

Trioplan 50 f2.8 II | Meyer Optik Görlitz lenses - Tradition meets innovation

Like the other two, it's available in Canon EF, M42, Nikon F, Pentax K, Fujifilm X, Leica L, Leica M, µ4/3 and Sony E mounts.

€876.34 / $899.
09-28-2020, 02:16 PM - 1 Like   #157
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Not a bad markup for a lens that used to cost one hundreth of that price!

It's good to see them acknowledging the existence of the Pentax mounts, K and M42,
but I guess I'll stick with my M42 original, which works great on the K-01.
11-15-2020, 04:18 PM   #158
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One more: Laowa 100mm f/2.8 2x Ultra Macro APO – LAOWA Camera Lenses

Plus the HD Pentax-D FA 70-210 mm f/4 ED SDM WR, which is not in your list. Similarly, the smc Pentax-FA 35mm f/2 AL should be replaced by the newer HD Pentax-FA 35 mm f/2.

11-15-2020, 09:52 PM   #159
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@Mistral75

Thanks, I've made all the changes you suggested.
11-30-2020, 08:21 AM - 1 Like   #160
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One more:
QuoteOriginally posted by Mistral75 Quote
The Meyer Optik Görlitz Primoplan 75 f/1.9 II was announced today.

Primoplan 75 f1.9 II | Meyer Optik Görlitz lenses - Tradition meets innovation

Like the other three (Lydith 50 f/3.5 II, Trioplan 50 f/2.8 II and Trioplan 100 f/2.8 II), it's available in Canon EF, M42, Nikon F, Pentax K, Fujifilm X, Leica L, Leica M, µ4/3 and Sony E mounts.

€973.82 / $999.


12-02-2020, 06:28 AM   #161
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QuoteOriginally posted by Mistral75 Quote
One more:
Thanks, added it.
12-08-2020, 01:17 PM - 1 Like   #162
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interesting list

thanks Class A for compiling and maintaining it
12-09-2020, 05:57 AM   #163
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QuoteOriginally posted by torge Quote
thanks Class A for compiling and maintaining it
Thank you for appreciating it.
12-10-2020, 11:57 AM - 1 Like   #164
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Lensbaby's new Velvet 28 is available in K-mount (I just bought one), and a full range of lenses are showing as available in K-mount on the Lensbaby website, so it seems they have re-committed to K-mount. This includes the Sol 45 and Twist 60 stand-alone lenses, and the Optic Swap mount, which aren't in your list.
12-11-2020, 12:53 PM   #165
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QuoteOriginally posted by baro-nite Quote
This includes the Sol 45 and Twist 60 stand-alone lenses, and the Optic Swap mount, which aren't in your list.
Thanks.

I looked at the mounts in which the "Optic Swap" system is available and they don't include the K-mount. Where did you see support for it?

I've added the three other lenses you mentioned.
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