On 4/26/08, jim <[EMAIL PROTECTED]> wrote: > How backward compatiable are the F, FA DFA lenses with the Super A/Program? > I have only an FA 80-320 zoom and it doesn't provide the correct apature > information to the camera for program mode or shutter priority.
If the lens is a variable-aperture zoom (say, for example, f4 at the short end, f5.6 at the long end), it will always display the "short" aperture on a Super Program. If you look at how the A series contacts work, there's no way of sending different maximum apertures for the lens, so the contacts are coded for best case. On the plus side, it never seemed to affect the metering on my Super Program. You just had to do a little bit of mental conversion with the aperture shown in the viewfinder in program or Tv mode. The later cameras use the digital data connection on the lens to get the actual aperture out of the lens. No such brains in the Super A/Program. -Mat -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
