I dont know how its programmed and use ps7 now which is old. But like you have used USM for years ...
My own intro to ps has been from print ad stuff ( offset press ).. long time ago.
I'm talking about when ps and postscript and quark was working on print stuff, before desktop publishing ( was cmyk and desktop went to rgb ).
So back in cmyk days there are dot screens and angles of dots and all sorts of stuff re: dot gain and so on...
Years ago when I looked into what unsharp mask was "about " == in my " head " at the time I got the impression it was almost like " flashing " a film neg ( copy camera type stuff )... which I guess is not making much sense here... but basically you got an image and you superimpose THAT onto another ( same one but flashed maybe without dot screen ?). I have no clue how its programmed to do this.
My experience is that unsharp mask in PS is WAY better than sharpen dummied down, but it's only good up to about this:
amount 30
radius 1.0
threshold 0
I have no clue how this happens cause its like 20 years since I read about what was happening etc.
