Controls and Operation
The EOS 5D IV will work out of the box much like any other Canon DSLR, with direct access to most functions available via dedicated buttons. However, getting the most out of the camera and, in particular, its AF capabilities, requires a degree of customization.
Various aspects of the camera can be configured in some detail, to a degree that isn't necessarily obvious from reading the manual or playing with the camera. We detail the subtleties of customization available so that, once you know what you're trying to get out of the camera, you can find a way to set your camera up.
Q Menu
Despite the addition of a touchscreen, the 5D IV is primarily controlled via its many direct-access buttons with the expectation that you'll have your eye to the viewfinder. However, it does feature Canon's Q Menu: an interactive control panel that shows you the cameras current settings.
As with recent high-end EOS cameras, the Q menu is customizable: you can select which options appear and where, to give the quickest-possible access to the settings you need to check and change. And unlike the 1D X Mark II, you can use the touchscreen to select a parameter if you wish to change it, as well as to set up the Q menu.
Custom Controls
![]() |
There are a lot of customization buttons on the Mark IV, though the number of assignable functions for some can be frustratingly limited. |
Custom controls are a powerful way to customize the buttons and dials on Canon DSLRs. The 5D Mark IV offers a total of 10 customizable buttons and dials, plus the option to customize the Fn button on Canon lenses that have it. You can repurpose the following buttons to varying degrees: shutter release, AF-ON, AE lock, DOF preview, M-Fn, SET, the multi-controller (joystick), the new AF area selection thumb button, and both the main dial (front) and rear wheel.
Note though that different buttons offer varying degrees of customization: from a simplistic on/off for the multi-controller button to a rather extensive set of features assignable to the DOF preview button. Practically speaking, the shutter button and multi-controller joysticks aren't customizable beyond being able to be turned on or off.
We find the seemingly arbitrary restrictions with respect to what functions you can assign to any given button to not only be limiting, but also incredibly confusing, requiring you to keep track of what functions are or aren't assignable to any particular button.
Worse still, the real power of the system, that allows you to define very precise behavior to certain buttons is rather buried in the interface. Understanding this will really help you get the best out of the camera.
| Button |
Assignable Functions (default in bold) |
|---|---|
| Shutter Button |
|
| AF-ON |
|
| AE Lock |
|
| DOF preview |
|
| Lens AF stop |
|
| Multi-function (M-Fn) |
|
| Set (Center button) |
|
| Multi-controller |
|
| AF area selection |
|
Customizable custom button behavior
Three of the settings (highlighted with a green footnote number) that can be assigned to custom buttons allow precise configuration of their behavior. These make it possible to define exactly what the button does, when you press it.
Metering and AF start
The 'Metering and AF start' option lets you configure four aspects of AF behavior that change when you press that button. You can specify as many of these aspects as you want, such that you can just set the button to switch from AF-S (One Shot) to AF-C (Servo) mode or set it to also change AF-C behavior case and jump to a pre-registered AF point upon a button press, if you prefer.
| Option | Detail set. |
|---|---|
|
1. Metering and AF start Note these sub-options aren't available for the shutter button |
|
Metering and AF start can be assigned and configured individually for multiple buttons (albeit only two of them), so you can set different buttons to jump to different AF behaviors and use-cases.
Register/recall shooting func
Register/recall shooting func lets you select from a series of camera parameters and lets you decide whether to assign values that the camera should jump to, when you hold a custom button down. This means you can jump to a specific shutter speed, ISO and White Balance mode if you know you'll need to suddenly shoot portraits in the midst of shooting sports.
'Switch to registered AF Func' is like a less sophisticated version of 'Register/recall shooting func' and we're not entirely sure why they're separate options. The registered AF Func option essentially lets you fine-tune the AF behaviour while the button is pressed, but without the level of control offered by 'Register/recall shoot func' (it can only change AF settings, not activate AF).
| Option | Detail set. |
|---|---|
|
2. Register/recall shooting func Note that any or all of these functions can be activated to change its associated setting |
|
| 3. Switch to registered AF func |
|
Unlike the 'Metering and AF start' option, you can only specify a single 'Register/recall' behavior and a single 'Switch to registered AF func' value. If you set multiple buttons to either of these options, all those buttons will behave in the same manner.
Particularly unfortunate is that 'Metering and AF Start' and 'Register/recall shooting func.' can only be assigned to the AF-ON and AEL buttons, meaning these are the only two buttons you can assign - even on a 1D X series camera - to instantly activate a pre-chosen AF mode. You can assign other buttons to 'Switch to registered AF func', but they'll all only ever switch to one other AF mode, and you'll still need to combine that button press with another button press to actually engage AF (e.g. AF-ON or the shutter button). It's an unnecessarily complicated setup, and Canon would benefit from a re-thinking from the ground up when it comes to button customization. A good start would be to make all options available to all buttons.
*Note: the 'AF operation' option available under Register/recall simply selects whether an AF acquisition is performed, rather than switching between AF-S and AF-C modes, as it does under 'Metering and AF start.'
Auto ISO
The Canon EOS 5D Mark IV has the same Auto ISO implementation as the 1D X Mark II, which is a significant step up from the 5D Mark III. Like its predecessor, there are customizable upper and lower ISO limits, but the minimum shutter speed threshold includes faster shutter speeds and the focal-length aware 'Auto' option can now be biased faster or slower in 1EV increments.
![]() |
The 5D Mark IV gains fully programmable Auto ISO, with a full set of minimum shutter speed thresholds and an adjustable 'Auto' threshold setting. |
Annoyingly, accessing this minimum shutter speed setting requires a menu (or My Menu) dive, which can be somewhat cumbersome. By default there's no easy way to access exposure compensation when using Auto ISO in full Manual exposure mode. You'll have to program the SET or 'AF area selection' thumb button to control exposure compensation, or take your eye off the viewfinder and use the Q menu, if you want to adjust image brightness.
In video, Auto ISO is mandated in all exposure modes save for Manual, where it's optional. There is no minimum shutter speed threshold for Auto ISO in video, so you'll need to shoot Manual or Shutter Priority for control over shutter speed. Exposure comp continues to work with Auto ISO in video, with a simple turn of the rear dial in Program exposure modes. In Manual mode, you'll have to assign a custom button (SET or 'AF area selection') to exposure comp, since the Q menu does not offer it.
























































Comments