Strange color negatives among good ones

Started Jan 7, 2013 | Discussions thread
mburns Regular Member • Posts: 412
Re: Strange color negatives among good ones

I would definitely scan with the dull emulsion side down and the curled ends down. The image is not reversed as you look down on it on the scanner. This allows the scanner sensor an unobstructed view of the developed emulsion. Just undo the scanner's reversal of the image in post processing.

I read that scanners do autofocus, so you should have some flexibility.

The available print sizes are only a matter of arithmetic once you assemble the basic facts. (11" by 14" prints do not exceed the capability of digital cameras.)

My Digital Rebel yields 6.3 million single color pixels. I would discount that number by half to 3.2 million full color pixels. But then, I would be more than willing to try  to artificially enhance that count up to the 8.64 million full color pixels needed for a perfect 8" by 12" print, at 300 dpi.

You have a 2400 dpi scanner setting available, that yields full color pixels. The film frame is 24mm by 36mm, so you have a yield of 7.714 million full color pixels. (I use the "units" command line calculator.) I would willingly try to enhance that, with noise reduction, and interpolation and sharpening, to the 19.44 million full color pixels that make up a 12" by 18" print. Just specify 300 dpi and a size of 12" by 18" in your post processor.

Making color curves for scanned negatives, is a task that I am not finding to be easy. I think that I want at least four calibrated points on the curves for each color - red, green and blue.

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