This is slightly off-topic, but just within film format used as examples - I'm scanning LF negatives on same scanners and I'm getting similar results. Those are some of last weeks scans and I will scan some LF shots from same locations next week. So much for 1st part of explanation.
So, in the firm where I'm working we have 3 scanners - One Heidelberg Topaz and two Creo/Scitex Smart scanners (one eversmart and one supreme - the late one is mine). I'm scanning my negatives with emulsion down (right reading while scanning), with (extensive) usage of scanning fluid under the scanning foil. All scans are done with some 3 or 4 thousands dpi (to get final print of 75x75cm on Durst Epsilon 30).

On the 1st example you can see moiré pattern in some shades of gray. That is what I'm getting from Topaz with some emulsions, mostly with efke and agfa films developed in Rodinal. Sometimes with efke films developed in XTol as well. I haven't got such moiré on TriX. It s very, very hard to tender such patterns in post-production - and impossible to get rid of it after the scanning stage.



Next problem occurs on scitex scanner - light "leaks" mostly (nut not only) on the sides where are in contrast translucent negative border and dark portions of shot (as sky in this example). I'm aware that I could get rid of that problem with usage of mask for particular format - but I like to have original film border. The late problem is somewhat easier to solve in post-production, but not easy. For that reason I didn't darkened sky (clouds) as I would like to do on the 2nd example.



Does anyone have any experience in solving those problems?

Tnx for help.