>>3272105Tone curve is pretty straightforward, but the Tone and Temperature are particularly useful. if you dont use them, the luminance curve might wash out saturation. just doubleclicking applies a straight y=x curve that fixes that. In pic related you can see that I corrected the temperature curve downward, so it doesnt go through the middle anymore. that's what turns the yellowish murky background a bit more nuanced and distinct.
my flickr is
flickr.com/photos/theenngee 