Can anyone please explain me in simple words the following 3 AF options:



Basically I really have vague idea about the fine differences of all of them.

I am using them but am pretty sure they don't react as described ergo better ask veteran wolves here for explanation and opinions.
EDIT: Can someone please move the question to the Questions and Answers section? I am sorry for misplacing it. And thanks in advance.
- AF-ON Eye Detection AF
- AE Lock button Metering and AF start
- Moving AF point, start AF by eye Ctrl
- Move AF point by eye control



Basically I really have vague idea about the fine differences of all of them.

I am using them but am pretty sure they don't react as described ergo better ask veteran wolves here for explanation and opinions.
EDIT: Can someone please move the question to the Questions and Answers section? I am sorry for misplacing it. And thanks in advance.