Is AF performance different between 77 & 273 AF points?

[Wing0949]

Is AF performance different between 77 & 273 AF points? Or is it purely a matter of allowing you more or less selectable AF points but the AF performance is exactly the same either way.  You're not going to get any faster, more accurate AF or tracking with more AF points, will you?

[abonhamc]

As long as you're talking phase points, no. The 77 setting is "faster." However, 273 adds contrast points which, while slower, are more accurate than phase points in low light high contrast scenes. Substantially, in my limited small concert venue experiences.

[Wing0949]

As long as you're talking phase points, no. The 77 setting is "faster." However, 273 adds contrast points which, while slower, are more accurate than phase points in low light high contrast scenes. Substantially, in my limited small concert venue experiences.

Ok, thanks for the info and your experience.

[flysurfer]

Is AF performance different between 77 & 273 AF points?

 

 

No.

[Wing0949]

I was messing around with this again at home and it was late and low light.. yeah, i don't think it makes a difference in AF performance.. if it does, pretty negligible.

 

I would probably keep the 77 grid up mostly, as I have been. I don't find I need to be so particular with 273 points and moving the AF point around with 77 is a lot faster than having to maneuver through 273.

Edited September 14, 2016 by Wing0949