I did not realize that there is a 35mm holder from Betterscanning? Or is this the ANR glass insert?
I use the 4x5" non-ANR holder for everything, from 35mm strips to 4x5".
🙂
To extract the maximum quality, I use wet mounting; in particular, "reverse wet mounting".
With a friend we did a video tutorial; it's in italian, but I think video is more important than audio in this case:
http://www.effeunoequattro.net/htdocs/freecontent/videotutorial/index.php
Would you please let us know how you use the scanner, other than the custom holders? What software/settings etc?
I use Vuescan in Advanced mode.
I scan at 6400 ppi, 48 bit and save a copy as is, for archivial purpose; then I resample in Photoshop to whatever final size I need. Sharpening is the last pass; I convert in LAB and apply a Smart Sharpen on the L channel only (to avoid chroma noise buildup). For Smart Sharpen I set "Remove Lens Blur" and "More Accurate". This way, Photoshop switches to a very good algorithm (a simplified version of Richardson-Lucy deconvolution), instead of crude old unsharp mask.
Colors: I built ICC profiles for my scanners using Wolf Faust's IT8 targets (targets.coloraid.de), with Profile Prism from DDI Software (same guy of QImage).
Anyway Vuescan Professional has the ability to generate a (simpler) ICC profile itself (you still need an IT8 target slide); not as effective, but good enough.
I optimize exposure to be sure that the full dynamic range of the film is captured (maximum scanner exposure without clipping), with the help of Vuescan's exposure histogram (Raw histogram, Logarithmic scale).
Color Balance is set to None (the ICC profile takes care of scanner white balance).
Another V700 comparison here:
http://www.rangefinderforum.com/forums/showthread.php?t=129085
My full review of V700 (in italian, but there are many images which may help) here:
http://www.effeunoequattro.net/htdocs/freecontent/FC_ProvaV700/index.php
Fernando