Here is a very interesting article on sharpening:
http://www.outbackphoto.com/dp_essen..._05/essay.html
We will have some PS plugin soon that explores these findings.
Uwe
PS: Just in case you are confused that I will quite often point ot my site, here is why. My site has about 3 million visitors per year. Our focus is mainly on:
- Digital Workflow
- Digital SLRs
- Runnerup Digicams
- Wide format printing
That means many of your questions have been answered at my site.
We also sell e-books about the digital workflow (covering the experience from working for 4 years with raw files):
http://www.outbackphoto.com/booklets/booklets.html