A red frame is displayed on images during playback (EOS 7D Mark II)
Solution
When [AF point disp.] in the Playback menu is set to [Enable], the AF point that achieved focus will be displayed in red.

NOTE
- If automatic AF point selection is set, multiple AF points may be displayed.
- [Disable] is set by default.
Solution: Change the setting to prevent AF point display during playback.
1. Set the camera's power switch to <ON>.

2. Press the <MENU> button to display the menu screen.

3. Press the <
> button and select the [
] tab.
> button and select the [
] tab.
4. Turn the <
> dial to select the [
] tab.
> dial to select the [
] tab.
5. Turn the <
> dial to select [AF point disp.], then press <
>.
> dial to select [AF point disp.], then press <
>.
6. Turn the <
> dial to select [Disable], then press <
>.
> dial to select [Disable], then press <
>. 
7. Press the <
> button and confirm that AF points are not displayed during playback.
> button and confirm that AF points are not displayed during playback.