Adjust the white balance.
White balance describes the temperature of the whites in your video. If your whites appear tinted blue or yellow, you can adjust them. Because white is a component in all your other colours, this will help your whole picture look more realistic.
Director and editor Jonathon Pawlowski suggests holding a white card or paper in front of the camera before every shot. “If you want to colour balance the image, you can use the Eyedropper to click the white card and that will tell the computer, ‘This is white.’ The white balance will adjust and that’s a good place to start.”
Another way to adjust the white balance is to use the Temperature and Tint sliders and gauge the effect on the video clip. Move the Temperature slider left to add blue to your whites and right to add orange. Move the Tint slider left to shift the whites toward green and right to shift them toward magenta.
Tweak the tones.
Under the Tone heading, you can use sliders to adjust Exposure, Contrast, Highlights, Shadows, Whites, Blacks and Saturation. Skin tone can be the most difficult shade to get right and the easiest to notice when it’s wrong, so pay close attention to the skin tones of your subjects.
One helpful way to gauge skin tone is to look at the Lumetri YUV vectorscope, which measures brightness (the Y value) against colour (U and V values). To isolate the skin tone, go to Effect Controls and add a mask. Draw a box around the face of your subject and then check the vectorscope to see how closely the skin tone falls to the line separating magenta from yellow. This line marks the hue of blood under the skin, so whatever the subject’s ethnicity, their skin tone should sit close to that line.
Once skin and other midtones look natural, check to make sure your highlights and shadow details aren’t lost. Use the Lumetri Colour waveform scope and histograms to ensure that the values of your tones aren’t clipped or crushed.