what does continuous AF mean? and single AF? what is the diff?

Question

what does continuous AF mean? and single AF? what is the diff?

Answer 1

Single AF is what you use in a regular shot.
You press the button 1/2 down to lock the focus, or all the way down - in which case it focuses and then takes the picture.

Continuous AF constantly adjusts the focus for your subject (or your feet or where ever it's pointing).
It's almost exactly like a camcorder does while filming.

It's better if you want to take a burst of several shots to make sure you got whomever foot crossed the finish line first.

Depends on what you take photos of - if you need it, then it's nice.
Otherwise, it's probably just an extra expense.

If it was me, I'd take image stabilization over that feature - if they were offered for the same price.

Answer 2

Continuous autofocus tracks what it thinks id s the target and adjusts focus. Single autofocus focuses and does not change while you track a moving object.

Unless AF means something completely different.

Answer 3

Single AF will focus once when shutter is pressed half way. Continuous will look for focus when you press the shutter half way down until you trip the shutter.