Thanks all for the previous help with my Digital Rebel Questions. I especially found the Cortese article on the other site to be extremely helpful.
My ongoing concern is this: I have the Canon 100mm USM
lens with macro capability. I am able to get razor sharp ultra close up photos with it. When I try to shoot at 70-80 feet, the images are just not as sharp. I have tried action shots and stills, auto focus and manual focus, varying light conditions. The images just are not as sharp at a distance.
I have other much less expensive Canon lenses with which I am able to get sharper images than I can with the 100mm.
Is this lens just not designed for distances beyond the macro range?
For wakeboarding, I know that most people favor the 70-200 F4, or F2.8. I am going to invest in one of those, but I would like to figure out what's going on with the 100mm.
Sigma has a new 70-200 F2.8. Any opinions. It's a little bit more $$ than the Canon 70-200 F4. It seems like a nice lens and a good value.