Photoshop CS5: I must be doing something wrong, but there appears to be an intermittent issue related to using a duplicate layer for sharpening. I use this method to have better control over the final sharpening level, apply masks, etc. With the duplicate layer selected I adjust sharpening amount (usually unsharp mask) to be more than ultimately desired. The sharpening effect looks correct when previewed. Then, when I apply the sharpening to the layer the resulting image (of the sharpened layer only) appears to have reduced contrast and no sharpening. I have checked things like blending mode, being certain I actually selected the correct layer for sharpening, etc. I don't see anything wrong. As I originally mentioned, this problem is intermittent - - - which, at least, means I'm doing something different when I encounter this problem. Please help.