Manual vs. Auto Focus; which do you use?

[Zatodragon]

For me, it would depend upon the lens i use. Some lenses have a very short focusing turn on the lens that it's very hard to get something tact sharp. But other lenses, like a sigma 105mm macro, has a real nice focusing ring and is pretty accurate for doing closeups or landscapes. But for portraits, i stick my camera to spot focus and keep it on auto. Spot focus is my best friend usually.