Canon EOS Rebel T5i 18-55mm IS STM Lens Kit 手册

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页码 388
299
3
 Custom Function SettingsN
C.Fn II: Image
C.Fn-3
Highlight tone priority
0: Disable
1: Enable
Improves the highlight detail. The dynamic range is expanded from the 
standard 18% gray to bright highlights. The gradation between the grays 
and highlights becomes smoother.
 
With setting 1, the Auto Lighting Optimizer (p.125) is automatically set to 
[Disable] and the setting cannot be changed.
 
With setting 1, noise (grainy image, banding, etc.) may become slightly 
more pronounced than with setting 0.
With setting 1, the settable range will be ISO 200 - ISO 12800 (up to ISO 
6400 for movies).
Also, the <A> icon will be displayed on the LCD monitor and in the 
viewfinder when highlight tone priority is enabled.