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Pentax 645 auto focus lenses on Fuji GFX 100S

  
 
dgurtch
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p.1 #1 · Pentax 645 auto focus lenses on Fuji GFX 100S


I use DXO Photolab 8 to process my raw images. One of its features is that it has modules to automatically correct lens flaws such as pin cushion, barrel distortion ( or combinations of these). I purchased a Pentax FA 400 mm lens to use on my GFX 100S that I will use with a Fringer auto focus adapter. Does anyone know if DXO will know to apply Pentax lens corrections?

thanks

Dave



Nov 01, 2025 at 07:55 PM
Geoff D F
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p.1 #2 · Pentax 645 auto focus lenses on Fuji GFX 100S


I don't know for sure but I am guessing no given the lens is a legacy lens from a discontinued system and not at all common. On the other hand telephoto primes generally have very little distortion anyway.


Nov 04, 2025 at 06:17 AM
SGinNorcal
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p.1 #3 · Pentax 645 auto focus lenses on Fuji GFX 100S


You might check DXO's website for information on what lens they have corrections on. I use Capture One and just looked up their list. All my Contax 645 lenses are supported and a bunch of Pentax and Mamiya older lenses. But not the FA 400mm. Still, there is a tool to make your own. Be surprised if DXO doesn't have something similar.


Nov 04, 2025 at 04:22 PM
stumblingfalk
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p.1 #4 · Pentax 645 auto focus lenses on Fuji GFX 100S


Wrong software, but I can report that Capture One don't have Pentax 645-lenses in their database, in case anyone wonders. They do seem to have a few Mamiyas tho, probably on account of the Phase One - Mamiya thing.


Nov 04, 2025 at 04:31 PM
 


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dgurtch
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p.1 #5 · Pentax 645 auto focus lenses on Fuji GFX 100S


I just checked DXO's website. They support a number of Pentax Autofocus lenses, but not the 300mm f5.6 autofocus, nor the 400mm f5.6 autofocus lenses, both of which I recently purchased on ebay. Lets hope these older lenses do not have some wild uncorrectable traits!
Thanks again
Dave



Nov 04, 2025 at 05:13 PM
dgurtch
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p.1 #6 · Pentax 645 auto focus lenses on Fuji GFX 100S


I just checked DXO's website. They support a number of Pentax Autofocus lenses, but not the 300mm f5.6 autofocus, nor the 400mm f5.6 autofocus lenses, both of which I recently purchased on ebay. Lets hope these older lenses do not have some wild uncorrectable traits!
Thanks again
Dave



Nov 04, 2025 at 05:13 PM
dgurtch
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p.1 #7 · Pentax 645 auto focus lenses on Fuji GFX 100S


Sorry for the double post.
Dave



Nov 04, 2025 at 07:10 PM







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