USM in CS6 - No effect until image is enlarged?


my apologies up-front sounding real "newbie's" question - , i'm not (i won 1 of napp "guru awards" in 2007).

 

one of online photography students said couldn't see changes in selective sharpening technique using unsharp mask, , seemed had missed step in process.

 

but, when tried in cs6, using 16 bit image, see sharpening affects in preview window in usm filter , in main image in ui when image enlarged above 75% or so. if image set view in ui, around 26% looks previous version of image without sharpening changes. effect of sharpening increasing enlarge image further , looks over-sharpened @ 300% or more.

 

can advise if is expected - in particular, have increase the size of image in ui see sharpening - or there way see without enlargement in ui - perhaps @ 8 bit?

 

thanks suggestions.

 

stephen

filters , adjustments judged @ view > actual pixels.

 

what settings did use?



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