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02-17-2011, 02:43 PM   #1
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voigtländer nokton 25mm f0.95 ... for Pentax?

Wanna get this one for my K-5.. how to let it happen? Any advice?

02-17-2011, 02:57 PM   #2
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its only available for micro four-thirds. the registration distance is too short to be adapted to the Pentax Kmount without the use of an adapter with added optical elements. this will degrade image quality and cause some light loss. also, the lens likely isn’t designed to cover APS-C so you would likely get vingetting. doesn’t seem worth trying, but there likely aren’t any adpaters on the market anyhow. sorry.
02-17-2011, 03:05 PM   #3
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hm yeah you are right..

Do you think it be worth to ask voigtländer to produce a special K-mount version of that lens?

I mean this lens would be a real killa lens on the K-5.. especially for available light shots..

Edit:
.. dont know if I misunderstand you, but did you say that such a lens wouldnt be possible for the 1.5 crop APS-C cameras at all?

Last edited by Becks21; 02-17-2011 at 03:08 PM. Reason: question
02-17-2011, 03:20 PM   #4
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no because of the vignetting. micro 4/3rds is 2x crop I think

there are a bunch of nice f1.2/1.4 lenses but they are 50-55mm not wide

02-17-2011, 05:50 PM   #5
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QuoteOriginally posted by Becks21 Quote
Do you think it be worth to ask voigtländer to produce a special K-mount version of that lens?
no harm in asking, but cosina doesn’t seem very interested in Kmount as of late.
02-19-2011, 09:29 AM   #6
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QuoteOriginally posted by Becks21 Quote
Wanna get this one for my K-5.. how to let it happen? Any advice?
For micro 4/3, focal lenght of this lens is 50mm. A good manual lens in K mount, also Voigtlander, is Nokton 58mm/f1.4. A review of this lens, but in Nikon version is here:
Voigtlander Nokton 58mm f/1.4 SL II - Review / Test Report.
I have this lens on GX20 and K7, and is a very good lens for night, portraiture (open at f1.4), street (don't forget it's manual focus), and landscapes (with outstanding resolution from f2.8 up). Good bargain also.
02-19-2011, 09:52 AM   #7
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Voigtlander Nokton 58mm, f1.4

And another short reviews on this site:
Voigtlander 58mm f1.4 Lens Reviews - Pentax Third-Party Lens Review Database
02-20-2011, 12:48 AM   #8
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QuoteOriginally posted by Becks21 Quote
Wanna get this one for my K-5.. how to let it happen? Any advice?
25mm f/0.95 is comparable to 50mm f/1.9 on FF, or 33mm f/1.26 on APS-C.

So I think the closest equivalent lens of Voigtländer 25mm f/0.95 for APS-C is Samyang 35mm f/1.4.


Last edited by Fogel70; 02-20-2011 at 12:55 AM.
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