Need more help setting up triple back button focus on R5

[LaneW]

I have received help with this before here, but now I cant figure out what I have done wrong.

I have set up triple back button focus.  I have full zone tracking on the AF On button, a zone on the asterix button.  Both working fine.  And I have the point selection button set to spot. When I push the button, is shows the white square for spot focus, like normal - but it does NOT actually focus.  

Here’s how  I set it up - In Customize Buttons I selected the AF point selection button. I understand that I cant do this using Metering and AF start like I did to set zone to the asterix button, so I used the settings in Switch to Registered AF Function instead, then selected detail set and set the AF method to spot.  Seems like it should work, and it does show up as spot focus when I press the button -  but it does not focus.

Help?

[p4pictures]

The Switch to registered AF function does what it says, but it doesn't also activate AF. So as you see, when you press the AF point button, the camera switches to your chosen AF method - spot - but no focus. 

Since the other two buttons are configured and switch to the correct modes, you need to set the camera to spot AF in the menu so that is the "default" when no overrides are in action. Then when you press AF-ON the configuration overrides the current - spot AF - and uses full zone tracking plus focuses while the AF-ON is pressed. Similarly for the asterisk button, it is set to override the active method and switch  to zone AF and also focus. For the AF point button, you choose the metering and AF start function, and it will now focus using the current setting of the AF method on the camera, which is spot AF. 

[LaneW]

As always, Brian, you are extremely helpful - thanks. Setting the default was part of my problem - and I think you have told me that before.  But I'm still not there.  

First, when I referenced spot, I was actually meaning single point - the single box, not box in a box.  Regardless, now that I have changed the default - and also realized that I was making changes in my Custom Function Modes, not M,P, Fv, etc.  I have that set to spot. Thought I had it figured out.  But alas, what I see on the screen now, pushing none of the back buttons, I don't see spot focus, but rather the single point (single box) and it will not focus still.  What am I missing?

Also - not to complicate further - can you advise how I may be able to set up similar AF for shooting video. The choices are very different, of course, but I'd like to get closer than I am now, if possible.....