Canon eos rebel T2i - Manual (Page 134)

Shooting Function Settings
134
[o] Menu
Movie exposure
Normally, set this option to [Auto].
Setting [Movie exposure] to [Manual] enables you to manually set
the ISO speed, shutter speed, and aperture for movie shooting
(p.127).
Grid display
With [Grid 1l] or [Grid 2m], you can display grid lines.
Metering timer
You can change how long the exposure setting is displayed (AE lock
time).
Sound recording
When the sound recording is set to [On], monaural sound will be
recorded with the built-in microphone. Stereo sound recording is
possible by connecting an external microphone (commercially
available) equipped with a stereo mini plug (3.5mm dia.) to the
camera’s external microphone IN terminal (p.16). The sound
recording level will be adjusted automatically.
kHighlight tone priority
This can be set only when [Movie exposure] is set to [Manual].
If [Enable] is set, highlight detail will be improved. The dynamic
range is expanded from the standard 18% gray to bright highlights.
The gradation between the grays and highlights becomes smoother.
The ISO speed range will be ISO 200 - 6400. The Auto Lighting
Optimizer will also be set automatically to [Disable] and cannot be
changed.
The Grid display and Metering timer settings will also be reflected in Live
View shooting.
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