Canon 6D Mark II Back Button Focus Tutorial

In this quick tutorial, you’ll learn how to swiftly enable back button focus on your 6D Mark II camera. This technique works in some form on practically any Canon DSLR, so don’t worry if you have another model.

Tutorial on canon 6d mark ii back button focus

Grab your camera and follow these easy steps, and you, too, can make use of this handy little Canon 6D Mark II Back Button Focus Tutorial.


We’re trying to achieve controlling the autofocus and shutter release button independently. This can be done by setting up a custom button for the AF function while leaving the shutter release as it is. The button we’re looking to use is ‘AF-ON.’

how to use the back button focus on the Canon 6D mark II

You’ll find it on the upper right-hand corner of your canon camera’s rear-facing side.

Half of the work is actually done for us by default. That’s because the ‘AF-ON’ button is, out of the box, already set up to activate the autofocus system.

The only thing we need to change is to de-link the AF function from the shutter release.

As you probably already know, your camera usually autofocuses when you gently half-press the shutter button. This is the feature we’re going to unmap.

Instead, we’ll reprogram it to the ‘AF on’ button on the back. Hence, back-button autofocus.


Now for the fun part. This is where we finally set up our Canon 6d Mark II back button focus.

What is canon 6d mark ii back button focus


First thing’s first. We need access to the custom settings menu. However, it’s not available in Full Auto (A+). Nor is it possible to access it in the Creative and Scene modes (CA and SCN) on a Canon EOS 6D Mark II.

This means we need to rotate our mode dial to either C1, C2, M, Av, Tv, or any other mode except for SCN, CA, or A+. This part is dead simple – just rotate and check whether the custom settings menu is available when pressing the Quick Menu button (Q).

MTV or MAV are both easy-to-remember abbreviations, if in doubt.

On the right-hand side of your camera screen, you’ll find the camera icon named ‘Custom Controls.’ This is the one we’re after.

Once entered the custom controls menu, we can choose to customize no less than nine different buttons on our 6D Mark II. However, we only need one for this tutorial.


While the first (upper left) button is selected, the title and description should read ‘Shutter butt. Half-press’. Per default, the chosen option should be Metering and AF Start’.

Once we select the icon and enter the next submenu, we’re presented with three choices:

  • Metering and AF Start
  • Metering Start
  • AE Lock


For back button AF, we need to change the selection from the first to the second by choosing ‘Metering Start.’ This unlinks the ‘AF Start’ function from the shutter button.

All done. Once you’ve selected the middle option named ‘Metering Start,’ exit. Lightly tap the shutter button to instantly jump out of the menu.

What now? Apart from testing out the new setup, you could, of course, go full OCD and explore the rest of the menu. For example, it’s possible to change how you lock exposure with the ae lock button. But let’s save that for another time!


How to setup canon 6d mark ii back button focus
  1. Set the Mode dial to M, Av, or Tv.
  2. Q-button – Custom Controls
  3. Upper left ‘Shutter’ – Then, the middle option

Here’s Canon’s Video Guide on Mastering Back-Button Focus:

FAQ for Canon 6D Mark II Back Button Focus

When should you not use back button focus?

If you need to shoot something critical yet feel uncomfortable with the setup and don’t have the time to commit it to muscle memory.u003cbru003eu003cbru003eThis is realistically the only situation where using back button focus might potentially be a disadvantage. Additionally, videographers and filmmakers might want to use manual focus mode much of the time.u003cbru003eu003cbru003eOtherwise, continuous AF tracking or picking a different AF point might feel more natural in some circumstances. With that out of the way, back button focus enables significantly faster and more efficient shooting, particularly with moving subjects.u003cbru003e

Why use back button focus in the first place?

There are two main reasons why photographers often prefer to use back button autofocus.u003cbru003eu003cbru003eFor some, it’s simply easier to wrap the mind around the process of correctly exposing u003cemu003eandu003c/emu003e triggering the shutter when only one separate operation happens at any one time.u003cbru003eu003cbru003eBy splitting the shutter release and the autofocus into discrete steps and button presses, it’s faster to autofocus and click the shutter. u003cbru003eu003cbru003eThis goes for both AF-S and AF-C (continuous focus) mode and is particularly true for fast-moving subjects.u003cbru003eIn fact, the quicker the target, the more relevant back-button focusing becomes.

How to disable back button focus?

If you aren’t feeling entirely confident using back-button AF and have a critical shoot coming up, you might want to flip back to the default setting. Even though it might be only temporarily.u003cbru003eu003cbru003eIn this case, go through these simple steps:u003cbru003eRotate the mode dial to one of the modes that enable the custom settings menu (our favorites Av, Tv, and M all work).u003cbru003eu003cbru003eThen, enter the Shutter button menu and choose the first option, which reads ‘Metering and AF Start.’ Half-press the shutter button and verify that it now both autofocuses and triggers the shutter mechanism.

Final Thoughts

That’s it. You’ve now learned how to set up your Canon 6D Mark II back button focusing and change it back if need be.

This power tip will undoubtedly improve your accuracy and efficiency as a photographer and increase the number of keepers.

It works on any Canon DSLR including 5D Mark IV.

Although the art of back button focus might eventually become less relevant with the advent of newer technologies such as AI servo, those of us with older cameras can still benefit hugely from it.

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