Originally posted by 8540tomg Too bad. It would be nice to have the convenience of an A seting on all those fine old K and M series lenses I own.
Tom G
that was why I tried. I was OK with the *istD, because a) metering was reliable and consistent, and b) because it supported TTL flash.
I looked seriously into this when I purchased my K10D because the metering was a mess, and I lost TTL flash support.
In the end, although I successfully converted the XR Rikenon 50mmF2 to a KA mount by drilling aperture coding detents into the mount, and adding the A pin, the exposure accuracy was worse than the K10D metering alone, due to the difference in aperture movement.
IF i had a machine shop and infinite time to fabricate new aperture mechanizms to make the movement linear with area, then it would be a worthwile conversion. Since I (and I guess many others) have neither, my conclusion is a waste of time, but that does not mean a conversion linkage could not be made for each lens, just that it won't be me doing it