Color Temperature

Color temperature describes how warm or cool a light source appears, measured on the Kelvin scale. Lower Kelvin values (2000K–3500K) produce warm, orange-tinted light — the kind you get from candles, incandescent bulbs, and sunrise. Mid-range values (4000K–5500K) are daylight-neutral, approximating natural midday sunlight or a camera's "daylight" white balance preset. Higher values (6000K–10000K) produce cool, blue-tinted light — overcast skies, shade on a sunny day, or fluorescent office lighting. The name "color temperature" comes from physics: it describes the color of light emitted by an ideal black body radiator heated to that temperature.

For video production, color temperature matters because mixing light sources with different color temperatures creates color cast problems. If you shoot a presenter next to a window (daylight, ~5500K) while also using an indoor LED fill light set to tungsten (3200K), the subject will have warm orange light on one side and cool blue light on the other — a look that reads as amateur and is painful to correct in post. Professional productions either match all light sources to the same color temperature or deliberately design a contrast between them for creative effect.

The camera's white balance setting determines what color temperature the camera treats as "neutral." Setting white balance to match the dominant light source in the scene produces accurate, natural colors. Setting it to a different value creates intentional color shifts — a warmer white balance setting makes a daylight scene look golden; a cooler setting makes indoor lighting look clinical. For B2B video, the standard is to match white balance to the shoot environment and keep it consistent across all footage in a project, then refine in color correction. Wild color temperature variation between shots that are supposed to be in the same space is an immediate sign of production inconsistency.