Canon EOS-1D X Mark II DSLR Camera (Body Only) - Manual (Page 276)

A Shooting with the LCD Monitor
276
Warnings
Do not hold the camera in the same position for long periods of time.
Even if the camera does not feel too hot, prolonged contact with the same
body part may cause skin redness or blistering due to low-temperature contact
burns. Using a tripod is recommended for people with circulation problems or
very sensitive skin, or when using the camera in very hot places.
The histogram can be displayed when [ z 4: Expo. simulation ] is set to
[ Enable ] (p.281).
You can display the electronic level by pressing the < B > button
(p.82). Note that if the AF method is set to [ u +Tracking ] or if the camera
is connected to a TV set with an HDMI cable, the electronic level cannot
be displayed.
When < g > is displayed in white, it indicates that the Live View image
is displayed at the brightness level closely matching that of the actual
image captured.
If < g > is blinking, it indicates that the Live View image is displayed at
a brightness that differs from the actual shooting result because of low-
or bright-light conditions. However, the actual image recorded will reflect
the exposure setting. Note that the noise may be more noticeable than
the actual image recorded.
If bulb is set or during flash shooting, exposure simulation is not
performed (p.281). <
g > icon and histogram will be displayed in gray.
The image will be displayed on the LCD monitor at the standard
brightness. The histogram may not be properly displayed in low- or
bright-light conditions.