I have long thought that my D50 and 50mm 1.8 do not autofocus very well together. Normally I'm using the single point AF mode, put it on my subject, focus, reframe, take the picutre. The faces of my subjects, where I put the AF point, often seem softer than they should be. It's not really bad, but consitently bad enough to make me think that somethings not quite right. Especially when occasionally the stars align and I get a really sharp image with this lens. I know that there are many things that go into making a sharp image, i.e. wide open most lenses aren't that great, especially the closer you get to the edges, very small depth of field wide open for an f1.8 lens, not shooting on a tripod, etc.... so it's always just been a suspicion. Last night I finally did some tests to try to figure this out. I didn't completely convince myself, but what seems to be the case is that the center AF point works better than the others. When I use the other AF points, the focus point the camera chooses seems to be a bit farther away than it should be. It seemed to be pretty consistent. I'm curious if anyone else has noticed similar issues.