I've scanned a number of 4x5 negs, B&W and Colour with the V750 4x5 holder with very good results. But I will say that the 4x5 folder is definitely better made that the 120 folder, but of course the 4x5 film is also sturdier that the 120. I do have the fluid mount assembly as well but have never felt the need to use it. I will likely try it at some point simply as a comparison with the 4x5 folder. And of course the 4x5 holder has the same "feet" on the bottom which lets the user either increase or decrease the height of the film, albeit a very small difference, and one would have to do all three settings to define the best one. One thing I do not understand is how one would be able to place a neg on the scanner glass and then use another piece of glass on top without causing Newton's Rings, since the neg would be placed with the emulsion side up, and of couse if the emulsion side is placed down the image will be backward. Of course that can be fixed in Photoshop, but I've also read that doing that could perhaps cause pixel issues. It's been a long time since I read that article, so perhaps it is no longer an issue in PS.
P.S. "
I recently picked up a V700 to replace my aging Expression 1680". I found this interesting, only because I would never replace my 1680. I haven't had the top cover attached to the 1680 for many years because it gets in the way and I'd never use it. I use a piece of mount board to protect the glass when not in use. My reason for keeping the 1680 is actually rather obvious. The 1680
does not have a recessed glass/bed, which makes it ideal for scanning pieces larger than the bed, and in some cases much larger. I also do fine art reproductions for local artists, which means I'm usually working with large originals. As a matter of fact I have scanned a 20x30 watercolour and printed it on the Epson Cold Press paper. The artist was very pleased with the results and has brought more pieces since. The only part of scanning that many bites is the placing on the scanner bed. One has to make sure that every scan is placed along the line of the first scan, which is not an issue but does take more time. If everything is done properly Photoshop has no problem stitching the bites back together. Luckily the 20x30 scan was done correctly the first time, so I didn't have to repeat it.