A6500: proper use of Lock on AF: Flexible Spot M

[rtcary]

On my A6500, I have Continuous focus ON and the Focus area set to Lock on AF: Flexible Spot M. When I try to set focus, I get "dancing spots" rather than a small frame. The "dancing spots" are moving all around where I initially set the focus (pressed the button for focus).  Is that normal?

I do use Back Button Focus (BBF), which should not have a bearing on this.

Many thanks for some clarification.

\rtc

[LiveShots]

The dancing squares indicate that it is tracking, its supposed to do that. As the subject moves around the squares should move around with them.

[rtcary]

In some of the demos, they show the square that is like the initial focus area, however I'm not sure if they are using an A6500 or one of the A7's.

\rtc

 

[Thad E Ginathom]

The dancing focus points and the grey rectangles are not the same thing.

 

Dancing focus points: Lock-on AF: Expand flexible spot.

grey rectangles: Centre Lock-on AF

 

Confused? I am! After two years with an a6000, which has the latter. I recently got an a6500, which has added the former.  I am not at all sure which is intended for what, but I think that the Centre-lock-on rectangles are inted for people.  Could be wrong, probably am!