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Thank you for your inquiry! Dynamic contrast ratio refers to the difference between the darkest black and the brightest white a TV screen can display over time, rather than at a single moment. For the Insignia™ 40" Class FE Series LED Full HD Smart Fire TV, this means the TV automatically adjusts its backlight depending on the content being shown—dimming during dark scenes to enhance black levels and brightening during light scenes to make whites more vivid. This creates the impression of a higher contrast image and can improve the viewing experience in certain situations.
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