> If I focused sharply on the center of the image, the edges and > corners were out of focus. If I focused on the corners, then the > center was out of focus.
And, Ramesh, I forgot to suggest trying to see if this is a factor with your slide projection disappointments. Try "rocking" the focus back and forth (in and out, I guess) to see if field flatness (or lack thereof) in the projection lens might be an issue... Fred, K1FW
