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===Brightness===
 
===Brightness===
The average brightness of the image is calculated by the 'brightness' block [[File:Brightblock.jpg]]. As at V106, the automatic gain control (AGC) is still functioning. The camera tries to correct the image brightness to a standard brightness, then calculates the average brightness. The result is a non linear relationship between actual and the measured brightness. Also, some parts of the image are brighter than others further complicating things. Using a diffuser, e.g. translucent material like a plastic bag, may help.
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The average brightness of the image is calculated by the 'brightness' block [[File:Brightblock.jpg]]. As at V106, the camera's automatic gain control (AGC) is still functioning. The camera tries to correct the image brightness to a standard brightness, then calculates the average brightness. The result is a non linear relationship between actual and the measured brightness. Also, some parts of the image are brighter than others further complicating things. Using a diffuser, e.g. translucent material like a plastic bag, may help.
    
[[File:Brightness.jpg]]
 
[[File:Brightness.jpg]]
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