hsandler
Subscriber
I temporarily find myself in the position of having access to three Epson flatbeds: the old 4180, a v500 and a v750. I also have a Betterscanning holder with ANR glass that I purchased for the 4180 and v500, and I was able to use it with the v750 also to do a comparison. I chose a good sharp black and white negative, shot with a Bronica ETRSi and normal lens on Ilford FP4, slightly pull processed. Here's what the full 6x4.5 scene looked like (actually, this image is not the same negative from which the detailed scans below are taken; it's the same composition shot through an orange filter, but the non-filtered negative is sharper):
Here are 100% views of the tip of the building with various 3200 ppi scans with the three scanners. In each case I used Epson scan software at 16 bit grayscale with a linear tone scale and no dust reduction, grain reduction or unsharp mask applied at the scanner. For the 4180 and v500, I used the Betterscanning holder with ANR glass adjusted to what seemed like the optimal height for each scanner. For the v750, I compared the stock Epson medium format holder in the "high" or "+" height adjustment (using the adjustable plastic tabs it has on the bottom) to the Betterscanning holder with ANR glass adjusted to what seemed the optimal height. To help compare, I have applied unsharp masking in Photoshop to the scans with radius 1.1, amount 225.
Finally, here's a version with the same setup as the lower right version (epson v750, betterscanning holder) but in this case, scanned with 48 bit colour and then only the green channel used. Not an improvement in this case.
Hope this may be of some use to people contemplating the v700/750 or one of the lower priced Epsons.

Here are 100% views of the tip of the building with various 3200 ppi scans with the three scanners. In each case I used Epson scan software at 16 bit grayscale with a linear tone scale and no dust reduction, grain reduction or unsharp mask applied at the scanner. For the 4180 and v500, I used the Betterscanning holder with ANR glass adjusted to what seemed like the optimal height for each scanner. For the v750, I compared the stock Epson medium format holder in the "high" or "+" height adjustment (using the adjustable plastic tabs it has on the bottom) to the Betterscanning holder with ANR glass adjusted to what seemed the optimal height. To help compare, I have applied unsharp masking in Photoshop to the scans with radius 1.1, amount 225.

Finally, here's a version with the same setup as the lower right version (epson v750, betterscanning holder) but in this case, scanned with 48 bit colour and then only the green channel used. Not an improvement in this case.

Hope this may be of some use to people contemplating the v700/750 or one of the lower priced Epsons.
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