What is the significance of the 'knee' setting in a professional video camera?
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A
It compresses highlight detail above a set level to prevent clipping while retaining some tonal information
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B
It boosts shadow detail in low-light scenes by amplifying the lower IRE range
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C
It adjusts the color temperature response of the sensor in highlight areas
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D
It sets the maximum frame rate the camera will record before rolling shutter increases