If you use AF at all, and your camera supports micro adjustments, do yourself a favour and check your lenses. Just look how the back numbers are so much sharper than the numbers near the zero, where they should be sharpest if you put your AF point on the logo.

Print off one of these. Or buy a real one. I just used the paper one. Its good enough for a general idea.

Google the specific instructions for your camera.

And voila. Better Pictures with AF.