A medium format macro lens for Phase One camera systems.
The Phase One Schneider Kreuznach 120mm f/4 Macro is a medium telephoto macro prime for the Phase One XF medium format digital system. 'Br' indicates the Blue Ring generation — an earlier production variant. The 120mm provides 1:1 reproduction ratio on Phase One's 44×33mm sensors and doubles as a portrait/close-focus telephoto.
120mm focal length, f/4 maximum aperture, macro capability (1:1 reproduction), Phase One XF mount, covers 44×33mm sensors. Blue Ring generation (older production; optically equivalent to current silver-ring versions but verify firmware compatibility).
At 1:1 on a 44×33mm sensor, the 120mm Macro captures subjects at life-size with the resolving power of Phase One's high-resolution backs (60–150MP). The 120mm working distance is more generous than shorter macro lenses — critical for product and scientific macro work where proximity to the subject causes problems. Compare: id=5456 Hasselblad Makro-Planar 120mm f/4 is the V-system equivalent. Blue Ring compatibility with current XF body firmware should be verified.
Test macro focus to 1:1 and confirm reproduction ratio accuracy. Check Phase One XF mount electronics and verify Blue Ring firmware compatibility with the specific XF body. Inspect glass condition — professional studio use creates cleaning marks. Test aperture coupling. Confirm Blue Ring generation works with the current XF body firmware version.