Quote:
Originally Posted by Charlotte
I may be having a blonde moment, but I still don't get it 
In particular, what does this mean exactly : "(i.e. tones on and behind more similar)" ? |
Sharpening is all based on enhancing contrast yeah? Having a very low threshold means pixels next to each other that are similar, ie contrast is low, will have sharpening applied at the level and radius set in USM. Having a high threshold means pixels next to each other that are similar will not have the sharpening applied, however pixels where the difference in contrast is greater than the threshold will be sharpened.