SFA wrote:I may be missing something here but the Curve tool offer Red, Green, Blue and Luma specific tabs with the RGB tab being a composite of those 4. The RGB without the Red, Green and Blue is the Luma curve is it not?
Yep, the Curve tool has the tabs and curves you listed. Prior to v12, though, the RGB tab had a single curve (the composite you noted). In the v12 Windows version it appears that the RGB tab displays 4 curves (the composite you noted along with Red, Green and Blue). Basically the RGB tab looks as though the curves from the RGB, red, green and blue tabs have all been stacked together (as is done in the Levels tool). Well, at least that is how it appears to me. I assume from the response to my ticket that this is true for all Windows users.
-michael