+18.76 mm
Space for the adapter
45.46 mm
M42 screw mount flange
26.70 mm
Fujifilm G-mount flange
Verdict: Yes — a simple 18.8 mm adapter keeps infinity focus.
What to expect#
Aperture control: these are mechanical lenses with aperture rings — set the aperture on the lens and shoot in aperture-priority or manual.
Focus: use focus peaking and magnification in the viewfinder. Exposure metering works normally because the camera meters through the lens at working aperture.
M42 screw mount lenses you could adapt#
- Laowa 15mm F/4 Wide Angle Macro
- Pentax SMC Takumar 50mm f/1.4
- Pentax Super-Multi-Coated Takumar 400mm f/5.6
- Pentax Super-Takumar 50mm f/1.4
- Pentax Super-Takumar 55mm f/1.8
- Pentax smc Pentax Takumar 135mm f/2.5 (V2/43812)
- Tokina RMC Tokina 28mm f/2.8
- Tokina TELE-AUTO 135mm f/2.8
- Voigtländer Color-Ultron 50mm f/1.8
- Zeiss Carl Zeiss Jena 1Q Biotar 1:2 f=58mm T
- Zeiss Carl Zeiss Jena Biotar 58mm f/2
- Zeiss Carl Zeiss Jena Flektogon 20mm f/4
- Zeiss Carl Zeiss Jena Flektogon 35mm f/2.4
- Zeiss Carl Zeiss Jena Pancolar 50mm f/1.8
- Zeiss Carl Zeiss Jena Sonnar 135mm f/3.5
- Zeiss Carl Zeiss Jena Tessar 50mm f/2.8
- Zeiss Carl Zeiss Jena Triotar-v2 135mm f/4
Fujifilm G-mount cameras#
- Fujifilm GFX100S II 2024
- Fujifilm GFX100 II 2023
- Fujifilm GFX100S 2021
- Fujifilm GFX50S II 2021
- Fujifilm GFX100 2019
- Fujifilm GFX 50R 2018
- Fujifilm GFX 50S 2017
- Kyocera Contax G
Other systems for M42 screw mount lenses#
Frequently asked questions#
Will M42 screw mount lenses autofocus on Fujifilm G-mount?
No — adapted lenses are manual focus on this combination.
Does a M42 screw mount to Fujifilm G-mount adapter affect image quality?
A glass-free adapter is just a precisely machined spacer, so image quality is unchanged when it is built to the right thickness. Cheap adapters can be slightly too thin or thick, which shifts the infinity mark.
Last updated October 03, 2026 · How we calculate · Sources