New article on color management

Started Apr 26, 2013 | Discussions thread
OP gollywop Veteran Member • Posts: 8,279
Re: Camera-->sRGB versus Camera-->ProPhoto-->sRGB

crames wrote:

Jack Hogan wrote:

Since in 99% of cases people are either printing or viewing in sRGB, it would be interesting to know whether it makes a practical difference in day to day use to work in sRGB from the very start versus using ProPhoto/other large color space to work in and convert to sRGB at the end of PP. Besides gamut, there are also other considerations when choosing one working (editing) color space over another.

Besides gamut, there are other things to consider when choosing a working/editing space.

Unlike sRGB, ProPhoto RGB  was designed to minimize hue shifts that can occur from "common image manipulations such as tonescale modifications, color balance adjustments, sharpening, etc." (ref: Kodak's ROMM )

Indeed. On the other hand, there can be even more significant color shifts after processing in ProPhoto RGB when you try to shoehorn the result into sRGB.  If it doesn't get you coming, it'll get you going.

sRGB might not be the best color space in which to do white-balancing. Another reference here. (sRGB has the same primaries as ITU-R BT.709 compared in these references.)

I'm not sure what you're talking about here, Cliff.  If you're shooting raw and doing white-balancing in ACR, the result is the same regardless of which working space you've chosen.  If you're talking about white-balancing a jpeg in PS -- well, there you're on your own.

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