De­grees Kelvin

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The colour tem­per­a­ture of light is mea­sured in de­grees Kelvin (after the physi­cist Lord Kelvin). An in­can­des­cent lamp emits light with a warm tem­per­a­ture of 2800K, whereas di­rect sun­light has a cooler colour tem­per­a­ture of around 5000K. Cap­ture NX-D has a colour-coded slider based on the Kelvin scale. You can slide it to the left to cool down a shot, or right to warm it up. Some of the white bal­ance pre­sets in the drop-down menu also re­fer to a pre­cise Kelvin value (such as Flu­o­res­cent 3000K).

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