Samsung UE55KS7500 HDR TV Review

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“For HDR, the Samsung UE55KS7500′s peak brightness behaviour was similar to that witnessed on the higher-end UE55KS9000 albeit at a lower intensity. Measured on window sizes specified by the UHDA for Ultra HD Premium certification, it reached a peak of 1185 cd/m2, stabilised around 1050 cd/m2 for around 15 seconds, then freefalled to 375 cd/m2. This fluctuating luminance made greyscale calibration in HDR mode extremely tricky if not impossible, which wasn’t helped by a) the central white patch measurements being affected by the presence of an adjustment slider at the bottom of the screen; and b) the [White Balance] gain controls on our review unit being reversed (for example, increasing [R-Gain] would decrease red energy).”

 

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