C.fn Iv: Operation/Others - Canon EOS REBEL T7i Instruction Manual

C.Fn-10
0: Disable
1: Enable
You can prevent the camera vibration blur due to the mechanical
vibrations (mirror shock) inside the camera during shooting with
super telephoto lenses or shooting close-ups (macro
photography). See page 200 for the mirror lockup procedure.

C.Fn IV: Operation/Others

C.Fn-11
When any of the following functions are set, the <i> icon can be
displayed on the viewfinder's bottom left (p.33). The <i> icon will also
appear on the Quick Control screen (p.59).
Select the function for which you want the warning icon to appear,
press <0> to add a checkmark [X], then select [OK].
When monochrome V is set:
If the Picture Style is set to [Monochrome] (p.156), the warning
icon will appear.
When WB is corrected:
If white balance correction is set (p.167), the warning icon will
appear.
When M is set:
If [z4: High ISO speed NR] is set to [Multi Shot Noise
Reduction] (p.170), the warning icon will appear.
When [s: Shooting screen] is set to [Guided], this Custom Function
does not function. (Settings are disabled.)
Mirror lockup
Warnings z in viewfinder
3 Custom Function Setting ItemsN
395