In lieu of experimenting, I thought I'd ask for some opinions.......
What situations would I want to shoot in RAW versus Large/Fine mode? I am using a Canon Digital Rebel.

Also, any tips on getting a SUPER fine focus? Is it more the lens or just manually focusing rather than auto focusing? I shoot a lot of macro and night photos. I have two lenses:
Canon EF-S 18-55mm f/3.5-5.6
and a
Tamron AF28-300mm F/3,5-6,3 XR Di LD Aspherical (IF) MACRO

Opinions would be greatly appreciated!
Thanks!
Trevor