I believe most of the newer film SLRs aside from the *ist and ZX-30/50/60 assume you want to be in program or shutter priority if the lens is set to "A" or lacks manual settings.
The old bodies that don't utilize the "A" setting pretty much can't use a lens that doesn't have manual aperture settings, according to bdimitrov's site. For details on a specific camera body, I usually just download the user's manual from Pentax and give it a flip-through. --- Unca Mikey <[EMAIL PROTECTED]> wrote: > A quick question, something I am curious about -- > I've read a lot > here about the compatibility of older lenses on > newer bodies, but > what about the other way? > > Specifically, on film bodies without a thumbwheel > (MZ-S, ZX-5n, etc), > how do you change the aperture when the lens is set > on "A" or the > lens does not have an aperture ring? Is there a way > to directly > change the aperture on the body? I assume you can > affect aperture > indirectly by changing shutter speed, but can you > operate in Av mode? > > Are such lenses even usable on older bodies like the > MX? > > Thanks. > > *>UncaMikey > > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

