Today I received my first auto focus lens to be used on an auto focus camera. The camera is the MZ-5n, which is on loan from a local list member, and the lens is a Pentax short tele 1.8 aperture. When using the lens on the A setting it will sometimes show the aperture in the viewfinder as 1.7 ;-)) I didn't check to see if that's the case in aperture priority mode as well.
Anyway, does this mean that the actual aperture of the lens is a bit wider than 1.8, or that the way the software in the camera is set it just reads out an aperture that's closest to whatever it's programmed for, or what? Will other aperture settings be a little off as well? Thus far, and apart from this little anomaly, I'm not too impressed with the way the auto focus focuses. It's clear that in a lot of situations (low contrast, low light, with certain textures or colors) the auto focus feature is pretty useless. I'd hate to see how it would perform with slower lenses. Shel
