Hi all, I recently discovered an old 35 mm camera in my closet. It's a 1960s Soviet era Zenit ET, and I decided to learn how to use it. However, I am totally 110% clueless. I just got my third roll back today, but I am still having very significant problems with how the photos are turning out - they appear just as poorly as those on the first roll. More than half of my pictures are out of focus. At first I accepted it as part of the learning experience, but by now it's becoming frustrating. Through the view-finder, everything looks fine and sharp, but the resulting photos are almost always heavily blurred. Occasionally some photos are fine, so, it must be me and not the camera. On some frames I am also getting a large white edge. I get the feeling that maybe the frame has not advanced completely after the last shot and so is double-exposed. What am I doing wrong here?