Correct, it was 4200 DPI.

Not sure.... that 8.5 x 11 would wind up being what?

93.5 square inches of surface....

I remember 5-7 years ago being able to do 1200 DPI without any major problems.

I mean... wow.

I can't even display more than 25 megapixels, native, at once on my screen. That is already an incredible level of detail.

Pretty amazing really - and it is only going to get better and higher resolution.