it should do a fine job for you. Your odd sizes preclude a film or slide scanner, so you must use a flatbed that can accomodate the sizes. One key is hardware or software which will convert color negatives properly. The Canon says it can do that.
I have lots (tons)of inherited old, old B&W negatives. Some are 2in by 4in, some are other sizes. Are these considered large format. does anyone know if the CANOSCAN 9950f will scan these? or is there another scanner that will. Someone told me that these are also called transparancies, but to me they are negatives. What is the best way to do this. i already have a HP 6300c but the small slide adapter is too small for the negatives. thanks Kathy