After years of trying to scan negatives on a flat bed scanner (mostly without success) it was great to get something that does it. It's operation is simple. If you are looking for large format high quality images from those slides and negatives then this isn't the scanner for you. Using it on my Mac through USB was a no no. I could only scan one image then had to eject it from the computer, switch off the scanner then switch the scanner back on to scan the next image. The enclosed memory card is the easier option. I had hoped that i would be able to transfer from scanner to Mac. It may be perfectly ok in a PC Windows environment.