Thanks, Al. I had forgotten about that tab, because I don't make those adjustments normally in ACR (no sharpening, etc.). What we don't know often causes fear
. Frankly, any HSL adjustments scare me, so I generally don't use them (I have used ColorEfex, to some degree to make color cast corrections). I really need to learn more about color and how to make those adjustments. I have fortunately, rarely found color cast problems other than in the sky and white water (which is pretty easy to adjust in Viveza), but when I do get an odd color issue, I have trouble fixing it.
LOL on the saturation - though I think even Al has to admit I have toned that back a bit recently. With the Carl Zeiss lenses, I am finding the color is so contrasty and snappy, that it is already saturated looking in many cases. I have also learned from experience that in Viveza, as you reduce brightness, the saturation of that part of the image seems to pop more and that you really have to be careful. Also, in many cases, increasing saturation digitally (i.e. with software), destroys detail, sometimes just creating a blob of color.
When I am as old and wise as Al, I will probably have decreased it even more