Canon EOS-1D X Mark II DSLR Camera (Body Only) - Manual (Page 436)

3 Custom Function Settings
436
Viewfinder info. during exposure C.Fn5
For viewfinder shooting, you can set whether to display the shooting
information in the viewfinder during the exposure.
OFF: Disable
ON: Enable
The shooting information will be displayed in the viewfinder even
during exposure. This function is useful when you want to check
the exposure, possible shots, etc. during continuous shooting.
LCD panel illumination during Bulb C.Fn5
You can set how the LCD panel behaves if you start a Bulb exposure
with its illumination lit: either to stay on, or to turn off when the
exposure starts and light up for a short period if the <
U > button is
pressed.
OFF: Off
When the Bulb exposure starts, the LCD panel illumination turns
off. Pressing the <
U > button during a Bulb exposure illuminates
the LCD panel for approx. 6 sec.
ON: On during Bulb
The LCD panel illumination remains on until the Bulb exposure
ends. This is useful when you are taking a Bulb exposure in low
light and want to check the exposure time.
When the shooting mode is set to “Bulb”, the viewfinder information will not
be displayed even if [
Enable ] is set.