the Sony FF A "series" cameras a7, a7r, a7s, a7II, a7rII etc ... (if this blog gets too complicated lol)
3/15/15 here is a good YouTube of the SET-UP for Back Button AF on the a6000
9/26/15 to INCLUDE my new settings for AF-C , Lock-ON AF:Flexible Spot
* Menu - Wheel - AF w/Shutter = OFF * This is Important for Focus Re-Compose with AF-C
Update: what I do now is:
* Lock-ON AF:Flexible Spot. ... in AF-C
Use the "Center" AF Point as my Lock on Spot ... normally this is a Cross AF point and the most sensitive. Giving you a faster initial AF lock.
"Then" I Re-Compose , letting Lock-ON AF "Follow" the Lock ON subject while I Re-Compose.
* Face Detection ON, just for good measure.
because "In Theory" , the Exposure should be "weighted" to the Face this way.
And the AF imho s/b on the eye (though it does not work that way now)
Metering Mode = Multi ... this is because of my "Exposure Compensation Priority" Stratagy.
On the LINK: http://tourist-of-light.blogspot.com/2013/12/sony-alpha-tip-priority-this-is-my-tip.html
Dial Set up = F/no SS
Dial Ev Comp = Rear Dial
AF-C for Continuous AF when using Back Button