The resulting file contains 24 bits of information (8 for red + 8 for blue + 8 for green) for each single pixel. That system describes up to about 16 million possible different pixel colours.
What is ricoh 4 bit color software#
It may be that what the scanning software refers to as "24 bit", is what is more usually referred to in digital editing as "8 bit":Ī format where ( for each of the 3 primary colour components, R G and B) colours are defined to only 8-bit precision (255 levels). The 5 x 4" negatives and transparencies are over 50 years old. My dark secret is that I DON'T DESTROY MY ORIGINALS as they are keeping up quite well and I might want to re-scan some as technology (and I) get better at it. The former give large, fine files at only 2,000 dpi scan res of 20 MB. I use a V800 for scanning 2+1/4" and 5 x 4" negatives and positives. That will keep your file sizes to a sensible size while loosing nothing. Therefore you need to test both lenses to get the scanning resolution limits. The smaller focal length is used for scanning 35mm images. However, the V700 Epson uses dual lenses. Scan at increasing resolutions and there comes a point at which lens diffraction limits any further detail, after which there is no point in making bigger files. Try this test with a currency note including very finely engraved lines. With colour slides, they have the highest dynamic range and it is the scanner's dynamic range which is most important. Where you have little data but need to make the most of it and/or avoid posterisation where the higher bitrate is valuable.
It is the problem slides (very high contrast) or greyscale and colour negatives (with very low contrast) where the 48 bit scan will come into its own. I've got two scanners, an Epson 700 and a Nikon Coolscan, the letter though slightly better in quality is very slow in comparison." There's a lot of theory talked about scanning, do this, do that, buy this, buy that etc etc. I'm in the middle of a huge and very long term scanning project, I've about 30000 slides, colour negs and b&w negs to do with a timespan of about 60 years. I would welcome opinions, I scan in high res so files are quite large anyway.įrom your previous post, I read "I've been mildly puzzled by this thread. A colleague advised me that 24bit was fine since printing only went to 24bit anyway.
Moving on with my stupidly large project I have variously scanned in both 24 & 48Bit and other than the file size I cannot really see a difference. I see there have been a few questions on scanning recently, including one by me.
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