Or simply use the D in manual mode and use a hand held meter. Bill
----- Original Message ----- From: "Heiko Hamann" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, December 01, 2003 8:02 AM Subject: Re: istD and old primes > 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 > >
