Pentax didn't keep cobbling their mount, they changed from screw to K, with no backwards mechanical compatibility to use a K mount lens on a screw mount body. Pentax and Nikon have been enhancing the control/command, lens/body interface to add new functions. The problem is that they've have made a series of changes, sometimes taking different directions (Nikon AIS). They are classic "evolved" systems, rather than "engineered" ones.
BR
[EMAIL PROTECTED] wrote:
What was it about the old Canon mount? Too narrow? Too far from (or too near to) the film plane? Have Nikon and Pentax been able to keep cobbling along because their mount dimensions were more generous? Somewhere this must have been written about, but I've never seen an article or discussion.
-Lon