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adwb

eye focus and face recognition on A7r2 not working

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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? 

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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 

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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 

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