Mamiya-Sekor 50mm f4.5 for Mamiya RB67 hand grip But you can use it

But you can use it in manual focus mode

A genuine Metabones Speed Booster adapter to mount Contax/Yashica SLR lenses to Micro Four Thirds cameras

threading is in excellent condition

and is 100% functional with Nikon's film SLRs all the way back to the F

with only the most minor cosmetic wear and under 700 (seven hundred) actuations

Mamiya-Sekor 50mm f4.5 for Mamiya RB67 hand grip But you can use itThis Mamiya Sekor 50mm f4. 5 for Mamiya RB67 is in excellent cosmetic condition, with only minor paint and finish wear. There is a very light cleaning mark near the edge of the front element; the glass is otherwise clean and clear. Slightly stiff aperture and FLE rings, good diaphragm blades, accurate shutter speeds throughout range. Not perfect, but still an excellent (and fully functional) wide angle lens for the RB.