eye focus and face recognition on A7r2 not working

[adwb]

Hi on Saturday , not for the first time, I gave up trying to use the eye focus on my A7r2.

It matters not which lens I have fitted, but the acquisition of a face square and the eye focus square are random to say the least.

 

 Given the praises that have been sung over these focusing aids I have to assume I have something not set correctly.

 

I was taking 20-30 images of 50 models at speed  so I tried both continuous and single focus modes, full focus area and zone are and even centre area. I have face recognition turned on and eye focus assigned to c3 button.

 

 I was shooting with studio  lights at f8 _ 1/160 _ iso 100 all day .

Is there a focal length that works better, I see videos of people using all sorts of focal lengths and still saying how brilliant the eye focus is.  

 

 I found standing in roughly the same place and the models the same that the face recognition was totally random when it appeared. The images them selves are fine , in fact every one is in focus so thats not a issue.

 

What are the aperture and other parameters that you have found that allow the camera to regularly find faces never mind the eye focus? 

[Ersin_Ulasli]

Thats weird bacause the eye AF works pretty well, even on a first generation a7 with the kit lens when it is wide open..

 

Verstuurd vanaf mijn SM-N9005 met Tapatalk

[adwb]

yes I think the lens needs to be wide open for it to work consistently and that's a problem when the lighting even on minimum power requires f4.5 or smaller 

[tinplater]

I think it may be the models at speed that is the problem.  I have no issues when using for portrait type photos, but of course the subject is generally just sitting there.

[thomasedi]

What lens are you using? My A7r doesn't have any problems on Sony 28 and Batis 85, even when when closed to f7.

[adwb]

What lens are you using? My A7r doesn't have any problems on Sony 28 and Batis 85, even when when closed to f7.

makes no difference which lens;  kit lens ,90 macro ,50 mm,  all the same.

 

it seems to me that you need to be shooting 3/4 or tighter shots for the face recognition or the eye focus to be selected shot after shot 

[photomnemonic]

The only time I experience this is when I'm doing full length shots of a model, framing it tightly, and some of the head/ face falls just outside of the focus area.