Workflow question for Pekka

Pekka,

As I am trying to follow your standard workflow, I stumble on your last step number 7. Use several actions to resize image to gallery sizes, sharpen with USM (alpha channel, A:25% R:0.6 T:0), convert to 8 bits and save as JPEG.

The part I don't understand is USM (alpha channel ...). What do you mean by "alpha channel"? How is it done?

Thank you very much,

Thanks for asking,

That's a spelling error....
I actually mean that you convert to Lab mode and sharpen the LUMINANCE channel only.

That's what you get when you write in hurry... I corrected it now to the page.