Nice trick, Jostein. The Sigma 70-200/2.8 is supposedly well built but still displays the error. Too bad we cannot draw a lens-related conclusion. It appears the mechanism itself requires very low tolerances both on the camera and the lens and is very prone to error. :o( Servus, Alin
Jostein wrote: J> Just tried it out with my Z-1, and I think it's possible to do with J> the Z-1/p too. Here's my method: J> Make sure you have no film in the camera. J> Turn the f-stop ring to A. J> Dial in M-bu mode, and select an aperture with the rear dial (eg. J> f/11). J> Trip the shutter, and keep it pressed. J> Watch the aperture blades while you... J> Turn the f-stop ring from A towards the stop you selected with the J> dial. When you turn beyond the selected aperture, the diaphragm opens J> more. Turn the f-stop ring back and forth a few times and decide if J> the aperture blades stop moving at exactly the stop it is supposed to. J> Anyway, My observation with a Sigma 70-200/2.8 was that the aperture J> was actually at f/13 when set to f/11 on the camera. IE, just the same J> observation as you made with the FA28-70/4. J> Jostein
