The human eye compensates for changes in color temperature, but a camera records exactly what it sees. To reproduce colors accurately, use the right white balance setting to make white appear truly white, and other colors look natural.
Lighting can change in any environment while you're shooting. When the light changes, the color temperature changes with it. The white balance setting is used to tell the camera what true white is. It makes sure that white looks white. A manual spot white balance gives you maximum control over the color temperature in both still images and motion media by measuring white balance directly from a selected area of the frame.
The auto white balance on the Nikon D750 camera is accurate and reliable when shooting scenes with a single light source or with color-matched lighting. However, if your scene contains multiple light sources with various color temperatures, your camera's auto white balance adjustment may select the wrong color temperature to compensate. It may even shift from one color temperature to another throughout your shoot. In cases of mixed lighting, your options are to set the camera to a preset, choose the color temperature or manually white balance the camera to your desired lighting color temperature in your scene.
Use the table below from the Nikon manual to manually white balance the Nikon D750 camera to match the light source in the scene.
Lighting Temperature Chart
|Fluorescent high temperature mercury-vapor
|Fluorescent sodium-vapor lamps