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The first of these is single-pass multi-scanning. There are several ways of getting multiple image samples.
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For instance, if you have a 10-bit scanner like the Nikon LS-30 and you read the CCD 4 times at each pixel position, you get effectively 12 bits of useful image data. Each doubling of the number of pixels increases the effective number of useful bits of data by one. The basic idea is scanning each pixel more than once and averaging these pixels. Here's an anwer to my own question about VueScan, taken from Īfter you've decided on the resolution of your finished image (or alternatively the pixel dimensions of your finished image), how do you maximize the image quality? There's one thing you can do which involves taking longer to scan but getting more raw data for each pixel in the finished image. The 750 is actually sloppier than the 4990 was.Ĭan one do this one's self, by scanning multiple times, and then merging the layers in Photoshop ? In otherwords the software appears to work great, but the hardware is still lacking.
#Silverfast 6.6 installation registration#
The scanner has to be warm (fresh from a "dummy" scan) otherwise subsequent passes may be enough out of size to defeat the registration program. The multiscan feature appears to be a big improvement but still there are problems with the consistency of passes with the 750 as did the 49. This is correctable by tweaking the profile in Negafix and saving it but I always wonder what a really bang on profile would do. Their profiles almost always generate too much magenta in the blues. I am beginning to think that this is because I shoot 160S at EI 100 instead of the 160 it is profiled at and the 2/3 stop difference causes a color shift that is inconsistent with the profile. The new profiles don't exite me, but that may be my problem, read below, For instance I was using a tweaked NPS profile for 160S, but the new 160S profile doesn't seem any better. I've had it for about a week and a half now.