Glossary of CG, lighting and cinematography terms

AchromaticWhite, black or gray colors that contain no hue.

Action safe areaAn area that occupies the central 90% of a broadcast image, which all of a shot’s action should be located within, in order to avoid it being cropped when viewed on a television due to overscanning.

Additive colorThe color mixing system that works by blending three primary colors.

AliasingAliasing is the unwanted staircase effect at the edge of a line or area of color when it’s displayed by an array of discrete pixels. This is cured using a process called antialiasing.

Alpha channelAn 8-bit channel in a 32-bit color image which stores transparency data.

Ambient lightLight that is present in the ...

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