What does Colour temperature mean?
Colour temperature is a way to describe the appearance of a white reference along a temperature-related scale. Television warm and cool controls use the idea to offer different overall white-balance presentations.
Why it matters
The labels are not a guarantee of measured accuracy, and different manufacturers can implement them differently. A warmer setting does not lower resolution, while a cooler setting does not create more detail. Judgement should include neutral objects and natural faces under ordinary room lighting. Allow time to adapt after changing from an exaggerated preset before deciding that a less blue image is wrong.
A practical example
A shop demonstration mode can look strikingly blue and bright beside a restrained cinema mode. At home, compare a familiar programme rather than choosing solely from the most vivid logo, and avoid treating a phone photo’s automatic white balance as a precise measurement.
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Related terminology: Colour gamut, Colour volume.
For practical setup and troubleshooting, browse the journal or support guides.