eye focusing with 5D3

[steliosk]

Hi again,
i'm playing a bit with an 85mm f/1.8 at 1.8
I'm having a 5D3 and i use this kind of setup for head portraits. so here are my worries:

There are two choices: spot AF and point AF

so let me see if i get it straight:

The spot AF is used for tiny subjects like eye lashes and it can be more accurate than the point AF. Right?

which one do you use for portrait shots? or it doesn't matter?

after playing a bit with both, the point AF hit the target better than the spot AF, or is it just me? i'm a bit confused.

 

[Random Orbits]

For single subjects, I tend to use spot AF. Have you AFMA'ed the lens to your body?

 

[Dylan777]

For outdoor shooting, I have no problem shooting 5D III + 85L II @ f1.2 AF point, even the outer AF points. I have not yet try spot AF yet.

As Random Orbits mentioned, AFMA is very important for prime. Both of my 5D III are set to ONLY DUAL-CROSS-AF-POINTS and CROSS- AF -POINTS. The remaining AF points are on disable.

 

[steliosk]

i haven't done any AFMA. The focus seems properly after some testings on a ruler.