Canon XF100 Instruction Manual page 58

Shutter Speed
NOTES
• When recording under artificial light sources such as fluorescent, mercury or halogen lamps, the screen may
flicker depending on the shutter speed. You may be able to avoid flicker by setting the shutter mode to Speed
and the shutter speed to a value matching the frequency of the local electrical system: 1/50* or 1/100 for 50
58
Hz systems, 1/60 or 1/120 for 60 Hz systems.
* May not be available depending on the frame rate.