Canon Speedlite 600EX-RT Instruction Manual page 30

Bounce
Catchlight Panel
Using the catchlight panel enables you to reflect light in a person's eyes
and create a more vivid expression.
Position the flash head towards the front and 90° up. When the flash
head is rotated to the left or right, the catchlight is not very effective.
To effectively obtain the catchlight in a person's eyes, shoot within 1.5 m
(4.9 ft.) of the subject.
28
Turn the flash head 90° up.
1
Pull out the wide panel.
2
Pull up the wide panel.
The catchlight panel is also pulled up
at the same time.
Push back the wide panel.
3
Push back the wide panel.
Shoot using the same method as
bounce shooting.