This lens doesn't automatically stop down when you take the picture. Put a normal f2 lens on your camera, turn it to f8 and you still have a bright viewfinder, but the lens will stop down to f8 when you take the picture. Put the K28/3.5 shift lens on the camera. Turn the shift lens to f8 to get a better depth of field and the viewfinder will grow dark. So you will have to focus at f3.5 and then pre-set your aperture to f8 before you fire the shot. (I have a series of old Asahi Pentax screwmount lenses that work just like this. It is how 35mm cameras worked before we had auto-aperture lenses.) Regards, Bob S.
[EMAIL PROTECTED] writes: > 6) the preset diaphragm in K 28/3,5 Shift - what does it mean? how does it work?
