Sony DSC-W830 - Manual (Page 224)

Digital Still Camera
DSC-W830
Noise appears in the image when you view the screen in a dark place
The camera is attempting to increase the visibility of the screen by temporarily brightening the image under conditions
of low illumination. There is no effect on the recorded image.
Notes on use
4-488-056-11(1)
Copyright 2014 Sony Corporation
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Troubleshooting
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