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filmscanners: RE: filmscanners: Moiré pattern in scan
I would bet you scanned the image at less than 4000 DPI. The pattern is
caused by the data decimation used in Insight. There are two solutions.
1. Scan the image at 4000 DPI and use bicubic interpolation in Photoshop to
decimate the data.
2. Download a UNSUPPORTED beta version of our next release from my ftp site.
Shhhhhhh, I am not suppose to do this!!!! This release gives you the choice
of any of four data decimation techniques including bicubic.
From: Herb Bauer [mailto:email@example.com]
Sent: Monday, December 17, 2001 8:59 AM
Subject: filmscanners: Moiré pattern in scan
I have a photograph of a tall building which has many thin lines running
vertically along its complete length - you know which one. Scanning the old
Kodachrome 64 slide on a Polaroid SS4000 with PolaColor Insight makes the
building look terrible because of a very pronounced Moiré effect. Is there a
remedy? On a related note, although the scan looks OK in Insight, it opens
almost black in Photoshop 6. I find that very strange, my scans from color
negatives work great.
PS: I won't be able to answer your replies until I'm back from vacation in
January. Happy Holidays and a wonderful New Year with many happy scans to