Ricoh 28mm ltm focus problem on digital M
I have a Ricoh GR 28 ltm lens, produced in limited numbers in the 1990s, which works very well with an M adapter on my film rangefinders. However, it seems to back focus on the digital Leicas, including M9 and M240. I consulted a tech at Nippon Camera, a reliable shop here in New York, and he said the lenses are perfectly adjusted but just don't focus right on digital cameras. Anyone know why this should be so? And if there's a solution?
I have the same issue, though less pronounced, with a Konica rf lens from the same era --the little 50mm f2.4 collapsible.