Sharpening with USM without colour noise!

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Edit My Images
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This may be of use to some.

As I understand it one of the problems with using the 'usm' on work to be printed is the perceived increase in noise in the colours. I certainly have had a few prints go wrong for this reason and have used the 'highpass' method now for some time.

Recently I came across the following method.

With image adjustments and cropping finished.

Image/adjust/lab colour

Show channels

Choose 'light channel'

Filter/usm (my usual settings are - but you obviously can play) 150-0.3-5

Apply and repeat apply at 100% mag. until happy

Click colour channel to check

Return to Image/adjust and reset colour choice.

This method brings the usm to bear only on the greyscale channel and does not affect the colour saturation or noise levels. It gives a 'different' feel to an image which you may like/or not.

Personally for prints of some size and complexity (landscapes / trees) it is now my pricipal method.

Enjoy.
 
Very useful TFS (y)
 
Thanks Sharkey, I'll have to try that one. :clap:
 
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