This leads to a noticeable increase in brightness, richer colors and higher contrast ratio.

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With SSDR, the HD cameras and automatically increase the brightness of the dark areas of the image without affecting the rest of the image, while SSNR III drastically reduces image noise to provide impressive color in low-light conditions.

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After analysing an unusual but temporary increase in Titan's brightness, Dr Griffith concluded that the most likely explanation was the presence of a thick, reflective cloud, covering roughly 9% of the part of Titan's surface then visible from earth.

ECONOMIST: Comparative meteorology

Samsung limits the brightness to reduce power consumption to increase battery life.

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But there is a way to counter the increasing brightness of the Sun, the scientists believe - just increase the radius of the Earth's orbit!

BBC: Blue Marble Nasa