Canon Speedlite 600EX II-RT Owner's Manual

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6
Customizing the
Speedlite
This chapter describes how to customize the Speedlite 
with the Custom Functions (C.Fn) and Personal 
Functions (P.Fn).
When the camera’s shooting mode is set to a fully automatic 
mode or a Basic Zone mode, the operations in this chapter are 
not available. Set the camera’s shooting mode to <d/s/f/a/
bulb(B)> (Creative Zone mode).