DSLRUsers.com

Tips & techniques aimed at EOS 1 series users, but there are still some handy hints applicable to all photographers.

eg. Avoid the use of small apertures with wide angle or wide zoom lenses.
Avoid recomposing after focus lock during portraiture or close up photographer. Reasons outlined in the PDF.

http://photoworkshop.com/canon/EOS_Digital.pdf

I thought the recommendations on using unsharp mask in Photoshop were intersting. I would never have used the settings they set:

Amount: 300%
Radius: 0.3pixels
Threshold: 0 pixels

I wonder what a D70 does when you set sharpening to Medium High.

Yeah, I think those recommended USM settings were specifically aimed at the Canon bodies with their super aggressive anti-aliasing filters. Those amounts on a D70 would probably hurt your eyes...

Shooting with a 70-200VR (THE benchmark of sharp lenses IMHO), I find no need for any USM at all.