AVer EVC900 - Manual (Page 56)

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Exposure
A photograph’s exposure determines how light
or dark an image will appear when it is been
captured by your camera. Select the exposure
level you prefer from 1 to 9 or auto.
Frequency
Select the correct frequency setting
(Auto/50Hz/60Hz/OFF) form the Frequency
drop-down list.
Sharpness
Adjust camera sharpness. The more
sharpness the screen image more easy has
noise.