The paradox of AF for me was always the poor low light performance. Just when a photographer could use some help with focusing many AF systems don't work all that well. Outside in bright light where you are likely to be stopped down and don't need AF very much it works very effectively. Most of my work is in a studio with strobes and I never use AF for that. I am grateful for the live view with 10x magnification that my cameras have for accurate focusing in those situations.