Owner's Manual

3 Custom Function Setting ItemsN
406
C.Fn-9 Viewfinder display illumination
You can set whether the AF points in the viewfinder will light up in red
when focus is achieved.
0: Auto
The AF points automatically light up in red under low light.
1: Enable
The AF points light up in red regardless of the ambient light level.
2: Disable
The AF points do not light up in red.
C.Fn-10 Mirror lockup
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 209 for the mirror lockup procedure.
When AI Servo AF is set, the AF points will not light up in red even when
focus is achieved.
 When you press the <S> or <B> button, the AF points will be
illuminated in red regardless of this setting.
 The aspect ratio lines (p.156), and the electronic level, grid, and flicker
detection set with [52: Viewfinder display] will also light up in red.