5dIII M-Fn toggle through AF Area selection modes

Someone please point out my foolish error.

The M-Fn button won't toggle through the different AF Selection modes.

Canon 5D Mark III
Manual mode
One Shot

I have selected all (or other combinations) of AF area selection modes from AF menu 4 (which means I should be able to toggle between them with the M-Fn button after pressing the AF Point Selection Button.

I should be able to:

1. Press the AF Point Selection Button (the one on the upper right that looks like a checkerboard)
   
2. Press M-Fn one or more times to toggle through AF area selection modes (Spot AF, Expand AF Area, Expand AF Area Surround, Manual Select or Auto Selection of 61 pt AF).
   

Check out these video's one of them is on 5dIII M-Fn toggle through AF Area selection modes

http://www.youtube.com …a&list=PLD2E776​C1855CF22E

Hi I'm having the same issue did you find a fix?

Many thanks
Demos

maybe its far fetched. But isn't it because you use one-shot?

No tried one shot, ai servo with single shot and multiple shots. Really weird just can't get it to be to choose an area! Really frustrating!

dsoup wrote in post #16118788
No tried one shot, ai servo with single shot and multiple shots. Really weird just can't get it to be to choose an area! Really frustrating!

Do you also have all 61 autofocus points enabled? I'm just guessing here, but I will test when i get home and report back here.

yep sure do, it was working yesterday when i was in the studio and then it stopped, not sure if i have pressed something to disable. when i press the area selection button far right the af points start to flash but by can not scroll through the zones with m funcftion or if i choose the dial option.

reset custom functions

Already Tried resetting custom functions still no joy.

dsoup wrote in post #16118788
No tried one shot, ai servo with single shot and multiple shots. Really weird just can't get it to be to choose an area! Really frustrating!

This doesn't sound like the same issue the OP is having, unless im reading your post wrong.
The OP is losing the ability to select the different AF point modes, not the different points and areas.
I'd offer you the same reply though.

alintx wrote in post #15266143
Someone please point out my foolish error.

The M-Fn button won't toggle through the different AF Selection modes.

Canon 5D Mark III
Manual mode
One Shot

I have selected all (or other combinations) of AF area selection modes from AF menu 4 (which means I should be able to toggle between them with the M-Fn button after pressing the AF Point Selection Button.

I should be able to:

1. Press the AF Point Selection Button (the one on the upper right that looks like a checkerboard)
   
2. Press M-Fn one or more times to toggle through AF area selection modes (Spot AF, Expand AF Area, Expand AF Area Surround, Manual Select or Auto Selection of 61 pt AF).

What is actually does is just toggle off/on the indicator in the viewfinder that show which AF point is selected (not the selection mode).

I also tried in on AI Servo, with the same response.

And, yes, I did check to make sure that the AF area selection method is set to M-Fn in AF Menu 4 (and not to Main Dial).

UPDATE: For a test, I set it to Main Dial, and I can toggle through them that way, but then I lose left-to-right point selection ability via the Main Dial (which I prefer to using the multi-controller (the little joystick button).

I also tried with two different lenses, since some of the focus system functionality is lens dependent.

What have I got set somewhere to restrict this functionality?

Are you using one of the C modes on the camera? Could it be that in one or the other modes that button has been assigned to something else?

Just a guess.

Hi I'm using manual or av not custom, using the joystick I can select each focal point, what I can't do is select clusters or other zones what so ever.

dsoup wrote in post #16119272
Hi I'm using manual or av not custom, using the joystick I can select each focal point, what I can't do is select clusters or other zones what so ever.

Ah right. I miss read your post then.

Have you checked that nothing else is assigned to that button?

Dave can you check your setting under custom and let me know what is assigned to your mfunction button?

In Custom controls its set to bring up the VF Electronic level.
AF Area Selection method is set to M-Fn Button
I have Select AF Area selec. mode set to all but the last one (61 point)
Selectable AF points are set to all 61 points.

I cant think of anything else to check.