Daemon42 It is not normal for half of the image to be outside the frame. I have seen cases when less than 5% of the image was inside the frame, which is definitely not normal, I think I posted screenshots of that before. No matter what the image rotation with respect to the frame is, a disc of diameter 0.7 degrees centered on your image is what needs to be kept inside the frame. There is no need to go outside the frame more than that.