Black and white photos as digital images need to be edited or
manipulated with 16 bit colour depths (also known as 48 bit colour.) At
8 bit, they fall to pieces. If possible they would probably go better at
32 bit, because of the high dynamic range of B&W.
Pre-digital colour was the difficult one but digital has inverted this
and made B&W the more difficult. I am trying to build Cinepaint, which
is 16 and 32 bit colour depth, on Ubuntu to cope with this need. So far,
without success.
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