Luminous Landscape Forum

Equipment & Techniques => Digital Cameras & Shooting Techniques => Topic started by: ski542002 on June 11, 2018, 11:03:27 am

Title: Eye AF issues
Post by: ski542002 on June 11, 2018, 11:03:27 am
Hello:  Overall, enjoying my new venture into the Sony system with my A7RIII, A7III and 6500.  I find the different AF modes to be most challenging.  Most challenging is the lack of accuracy using Eye AF.  Using strobes, did a tight mid-chest portrait with my 24-70 Gm @ 2.8. (Lens set to 50mm).  Eye AF, small spot focus with the green square clearly on the foreground eye.  Subject was in fairly good focus although I did need to sharpen the eyes to achieve the perception of perfect focus.  Shot the same subject, same camera settings with my 85 @ 1.8. This was a tighter headshot than the first scenario. I got a great 42mp image of a sharp nose!  Needed to apply heavy sharpening on the subjects eyes to make him look somewhat acceptable. Thankfully, theyíll be small reproductions.

My issue is, in the old days I would have used manual focus and would have easily nailed all the shots.  Using this cutting edge technology, and shooting slow & deliberate, I trusted the eye af and it failed miserably.  When shooting wide open for esthetic reasons, I donít want to have to constantly stop down to F8 for a headshot to get acceptable focus. Was shooting with the A7RIII.  Donít know if Iíll have the same issue with the A7III or 6500.

Maybe I have something set incorrectly in the camera?  Any input would be appreciated!
Title: Re: Eye AF issues
Post by: Telecaster on June 11, 2018, 08:26:02 pm
The first thing I'd do is turn off Eye AF, then use the joystick to move your focus point where you want it for a particular shot or set of shots. If you get proper results by manually placing the focus point, at least you'll know your lens isn't misbehaving.

Title: Re: Eye AF issues
Post by: Eric Brody on June 14, 2018, 03:39:02 pm
Sorry to hear you're having problems with the eye AF. I have used it quite a bit, even with moving toddlers and it's spot on for me. I have used it mostly with the 85 f/1.8 shooting at f/2 or f/2.8.

In his superb, highly recommended video on portrait settings for the A7RIII, Mark Galer, a Sony expert says he gets over 95% perfect focus. With no disrespect, I wonder if you're doing something incorrectly?
Good luck.
Title: Re: Eye AF issues
Post by: fredjeang2 on June 15, 2018, 10:29:18 am
Same here. Eye AF works very accuratly, even on the APSC model.

Go figure with electronics...
Title: Re: Eye AF issues
Post by: ski542002 on June 16, 2018, 11:19:13 am
Update for all contributors.  And someone else mentioned Mark Galer which was the driving source for solving my problem.  Apparently, I didnít even know that, because of the way my cameras were setup, my eye focus wasnít even enabled.  Dumbass me.   Thanks to Marks YouTube video, I enabled eye focus via the AEL button.  Itís very liberating to be able to shoot an 85mm 1.8 wide open and count every eyelash in a scene!   I used to shoot a lot of Leica (Canon before that), and I was never able to hit anything close to the 90% + in-focus imagery that I achieve now.  These forums and YouTube are a godsend for anyone getting into the Sony system.

I appreciate everyoneís input.