"Leon Altoff" <[EMAIL PROTECTED]> wrote: >On Wed, 25 May 2005 22:28:02 -0400, Mark Roberts wrote: > >>Collin R Brendemuehl <[EMAIL PROTECTED]> wrote: >> >>>How many here have had mounts modified by Mark Roberts? >>>Have you used it on the DS? >>>How well does it work with the D/DS? >> >>Doesn't work at all with the D or DS. These cameras need the digital >>data pin of F and FA lenses to do matrix metering. > >It does work. You only need an A lens for matrix metering or P-TTL >flash to work on a D or DS. The problem is getting the lens to look >like it is set to "A", as this terminal requires the pin to push out of >the lens mount. The only way to do this is to spring load it. I did >this to the mount on my bellows, but I'd hate to do it to a lens.
Ah, I didn't know the details of this! I still don't think it would work, though: If you made the camera think an "A" lens was attached it wouldn't be able to do the "stop down and meter" trick necessary for K and M lenses, if for no other reason than the stop-down arm linearity issue. In short: Multi-segment metering isn't going to happen with K and M lenses on an ist-D or ist-DS. (Not a great loss, IMHO. I almost always stick with center-weighted.) -- Mark Roberts Photography and writing www.robertstech.com
