Amita, Two things - you have to have the updated firmware loaded onto your camera (you can get this at the pentax website) and you have to set a custom function to allow firing of the shutter when not on 'A' setting
HTH, Bruce Friday, May 14, 2004, 3:02:30 PM, you wrote: AG> I thought I read somewhere that it was possible to use fully manual AG> lenses on the istD. I'm trying to use my 400mm mirrored Sigma with it. I AG> thought it was possible to just manually set the aperture on the camera, AG> but I can't get it to work. Any ideas on this or am I out of luck? AG> Amita
