Canon CR-N300 Settings Manual page 30

Move the slider to a negative value to darken the image, or to a positive value to lighten it.
Adjustment can be made in the range of -2 levels to +2 levels (by 0.25).
[Metering Mode]
When one of the [Iris (Aperture Value)], [Shutter Mode] or [Gain (dB)] is set to Auto, and the metering mode is set to match
the shooting scene, it is possible to shoot with more appropriate brightness.
[Standard]
Meters the entire screen while focusing on the subject in the center of the screen.
[Backlight]
Controls darker areas of the screen more brightly when shooting backlight scenes.
[Spotlight]
Controls the brightness of the subject in the spotlight.
[AE Response]
Select the response of AE when one of the [Iris (Aperture Value)], [Shutter Mode] or [Gain (dB)] is set to Auto.
The set values are High, Normal, and Low in order of the shortest time to achieve the proper exposure.
[Flicker Reduction]
Setting [On] automatically detects and corrects flickering from fluorescent lights.
Note
• Erroneous flicker detection may cause horizontal noise. In this case, avoid using [Flicker Reduction].
• When the frame frequency is 23.98 Hz, flicker reduction is not effective even when set.
• When shooting under an artificial light source such as a fluorescent lamp, mercury lamp, or halogen light, flicker may occur in principle
depending on the shutter speed set. It may be possible to suppress flicker by setting the shutter speed according to the frequency of the
power supply. For 50 Hz, select 1/50 second* or 1/100 second; for 60 Hz, select 1/60 second or 1/120 second.
* Not available depending on the frame frequency.
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[Auto Slow Shutter]
When shooting in a place with insufficient light (such as a room with low light), slows down the shutter speed automatically
and adjust to make the video brighter.
Possible to set when the shooting mode is
Note
• The slowest shutter speed for each frame frequency differs as follows.
At 23.98 Hz: 1/12 sec.
At 29.97 HZ: 1/15 sec.
At 59.94 Hz: 1/30 sec.
At 25.00 Hz: 1/12 sec.
At 50.00 Hz: 1/25 sec.
• Auto slow shutter cannot be used under the conditions below.
– When AGC limit is enabled
– When frame frequency is 23.98 Hz, 29.97 Hz, or 25.00Hz, and [Focus] > [Face Detection AF] is [Face Det. & Tracking] or [Face Only]
• For the precautions when shooting with auto slow shutter, refer to the following section "About Shooting with Slow Shutter".

About Shooting with Slow Shutter
By setting the [Shooting Mode] to
speed, setting it to
the subject brightly even where the light is insufficient. However, depending on the scene or the subject, the following
may occur.
– Noticeable residual image from moving subjects
– Deterioration of image quality
– White spots on the screen
– Autofocus not functioning well
(Full Auto) and
(Manual Exposure) or
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(Low Light) , or setting the [Auto Slow Shutter]
(Program AE).
(Shutter Priority AE)
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30
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to set a slow shutter
to [ON], it is possible to shoot