A 35mm slide is rectangular. You might have some slides that are verticals and some horizontals. Use the image software to rotate any that have to be scanned sideways. If that isn't the problem, the image software may be set to scan a cropped area of one slide and you need to select the whole rectangle shape for the next one. -- Elizabeth ----- Original Message ----- From: "T. Risinger" > I recently purchased an Epson Perfection 2400 Photo scanner. I bought this to scan film and slides. When scanning slides it will crop off part of the top and bottom or left and right sides occationally. I will scan about the middle half of the picture, usually. Can anyone tell me why this is happening?