strange things happen in PP ... any idea?

[John King]

Yeah, Richard, I understand.

Coming from a long background in computing (back to the early 1970s), I immediately understood the significance of data. More data = better images.

Even with my Nikon Coolpix E5000, I shot RAW from day 1.

Colour spaces took me about a year to work out (c. 2004).

sRGB was patently and obviously wrong (defective and deficient, too small).

aRGB is safest, if you have a 100% aRGB monitor. Still too narrow for vibrant yellows, oranges, pinks, reds and greens.

ProPhotoRGB is best, but don't do anything big to colours, because you cannot see what you're doing!

So I always shoot aRGB JPEGs in camera, and use 16 bit PPRGB for editing and printing RAW files.

Oh, and just to add, my main printer is an Epson R3880. It uses 16 bit printing -
(16 bits/channel = 48 bit printing the way that some state it {wrongly ... }).

It also uses 8 colour printing - cyan, light cyan, magenta, light magenta, yellow, black (K), light black (LK), and light light black (LLK). It will print almost all of the visible part of a PPRGB 16 bit colour space.

Adobe 16 bit is actually 15 bit, but that's getting really arcane ...