Michael Hastings
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hi all, i have been through this entire thread and it has me very excited to get into contax zeiss lenses, great stuff. Alas, no one has addressed how to them onto the red one, mine currently has the pl mount but i was probably going to swap it out for the nikkon.
any advice regarding mounts/adapters is appreciated.
thanks.
Most people use adapters on the Canon mount since it has the shortest flange focal distance (FFD) (44mm) which is the distance the lens mount must be from the sensor. C/Y lenses are designed for 45.5mm FFD so there is enough room to have a physical adapter (1.5mm thick at the flange) to work on the Canon mounts and still provide proper focus. Nikon F mount FFD is 46.5 mm so if you mounted a C/Y lens on a nikon mount it would be as if you were using an extension tube and you wouldn't be able to get the full focus range. (This is also why you can use NIkon lenses on Canon mount with simple physical adapters since it has even more room to make adapters that fit properly.