Hue/Saturation vs Selective Color

In Photoshop, when would you use the Selective Color adjustment instead of the Hue/Saturation adjustment? It seems the later tool can do everything and more than the former. So why use both?

I don't due it much, but I believe the selective color allows you to adjust the RGB channels individually.

texshooter wrote in post #19216089
In Photoshop, when would you use the Selective Color adjustment instead of the Hue/Saturation adjustment? It seems the later tool can do everything and more than the former.

This isn't quite true. SelCol has the ability to target whites, neutrals and blacks, in a way that Hue/Sat can't.
So I couldn't do this with Hue/Sat, for example.

texshooter wrote in post #19216089
In Photoshop, when would you use the Selective Color adjustment instead of the Hue/Saturation adjustment? It seems the later tool can do everything and more than the former. So why use both?

For that matter, so can the mighty Curves.

In Photoshop, "There are nine and twenty ways of constructing tribal lays, and every single one of them is right." (Rudyard Kipling)

On the flip side, Hue/Sat gives us a way to manipulate all the colours at once, which SelCol doesn't.
So yeah, they both have their place.

Most of the colors in a photo are mixtures of several colors. The green grass below, for instance, is a "package" that contains component colors (in the sampled area) of Red 97, Green 142 and Blue 67.

Selective Color allows you to tweak these individual component colors within the Greens. That's a powerful capability, and Hue/Saturation doesn't have it. With H/S you can go into the Greens and shift that entire green package around on the color spectrum (using the Hue slider); but you can't open the package and tweak its individual components. In that sense, SC is more sophisticated than H/S.

H/S, on the other hand, allows you to adjust saturation. You can't do that in Selective Color, nor can you adjust Lightness in SC the way you can in H/S. So in that sense, H/S is more sophisticated than SC. H/S also has that "Colorize" feature, something else that SC can't do.

They're just different kinds of tools with different capabilities, and they are well worth learning in as much detail as possible.