I have a 1640, which is these guys great grand daddy, but I'm sure the same applies in that the max size neg/slide that can be scanned is what's quoted and you can scan anything smaller. Mine has a seperate cover with a light in it (which alows the negs to be scanned with light shining through it rather than reflected light like a flatbed document scan). No idea if the latter model Epsons have the same arangement but the concept will be the same.
Originally Posted by Larry1948
BTW, a RB67 creates (usually) a "6x7cm" neg, which in reality will be 56mmx68mm or something like that.