Actually, Asahi Optical provided limited (not full) compatibility when they switched from their screw mount to the K mount (they abandoned diaphragm coupling and thus lost open aperture metering capability for screw mount lenses on K mount bodies).
Regarding your desire for full aperture coupling in Pentax DSLRs, J.C., I basically agree with you. I wish Pentax provided full backward compatibility to M and K lenses, too. That said, I do not find the confrontational gloom-and-doom all-caps approach very motivating. Also, since I am not a camera engineer, I can't comment authoritatively regarding the marginal BOM cost of adding aperture-sensing mechanicals, sensor, electronics, and firmware to an already very small platform. But that's another debate.... --Mark "J. C. O'Connell" <[EMAIL PROTECTED]> wrote: > Cant you guys read my posts before you make such comments about me? I > have explained repeatedly its not just the issue or K/M lenses on an > istD here that concerns me its Pentax turning point decision to no > longer support something without technical or financial CAUSE. Its > ridiculous that a camera as sophisticated as the istD doesn't properly > meter with K/M lenses because of a $5 part's removal for strategic > not photographic or compatability reasons. This situation is ONLY THE > START of something bad because they absolutely had a firm policy for deacdes > to NOT do that kind of thing and now they suddenly have done a 180 > apparently to sell more blades for their razors..
