Pixelated edges with Vuescan's Long Exposure Pass

  • Thread starter Thread starter BitBlit
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BitBlit

I get a weird "edge" effect when I scan using long exposure pass on some old
fp3 negatives. It's like the merge doesn't quite blend high contrast edges
the way it should. It almost looks like a bad cut and paste job. Anyone else
have this happen? Solutions?
 
Sounds more like the CCD elements are saturated and blooming.

submit a problem report to Ed. Sounds like the exposure time is too long
for that film.

Frank
 
BitBlit said:
I get a weird "edge" effect when I scan using long exposure pass on some old
fp3 negatives. It's like the merge doesn't quite blend high contrast edges
the way it should. It almost looks like a bad cut and paste job. Anyone else
have this happen? Solutions?
Click to expand...

What kind of scanner are you using? The CCD in some scanners
bloom from overexposed areas into nearby areas, causing this
effect.

Regards,
Ed Hamrick
 
It's a Epson 3200. I switched to multi-pass from long exposure and the
problem went away. I thought using long exposure would help pull some more
detail from the extremes of the negative, the photo way high contrast
outside in sunlight, but I think it might have been just a poor choice on my
part to use it on this particular negative, which is quite dense. The
problem on the edges looked like a dark jagged fringe very apparent at 200%
magnification, a remnant from the long pass perhaps. Under what conditions
in your experience does long exposure work best?
 
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