| Lux | Unit of light |
| LS | (Long Shot) A long distance shot which is usually wide angle |
| Lines Of Resolution | A measure of horizontal resolution in a video system, measured by the number of vertical black lines that can be resolved on a white background. |
| Linear Editing | Editing with analog formats |
| Lens Speed | Maximum aperture diameter, or minimum f-number, of a lens controlling the amount of light admitted through the lens |
| Latitude | Ability of the film or device to record the brightness range of the subject |
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