Hi Kevin, on 04 Dec 03 you wrote in pentax.list:
>I have a couple of 135mm lenses. >One a Takumar Bayonet 2.8-32 and the other a 2.5-22 >Is it possible make these work with the istD? They will work, _but_ - In AE the diaphragm won't close (or more precise: it closes, but the picture is taken with wide open diaphragm). But the light meter works and the shutter time will be set correctly. - In M the diaphragm will be closed an the picture will be taken with the aperture that you've set. The light meter will work, if you press the green button, but again - it will meter only wide open! So you've calculate a little bit (stopping down 3 times at the aperture ring -> increase the shutter time 3 times). Another workaround is to release the lens and turn it a little bit until the diaphragm is closed. Now the *istD works in AE with the aperture set at the lens. And a last trick: stop down the lens 3 times, set the exposure compensation to +3 and use the green button in M - now you have a nice working AE with an old K-/M-lens. Cheers, Heiko
