| marching ants | the animated effect of a moving dashed line used to denote the edge of a selection |
| Map Shot | A downward wide angle view |
| Macro Mode | A setting on the camcorder that allows standard lenses to focus from less than and inch to approximately 1.2 metres. |
| 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 |
| Keystoning | in order fit a 3 x 4 frame you must step back further (if flat on) or closer but angled to cover the same subject |
| jump cut | This is a jolt in continuity when you stop/restart without a change in shot size or angle |
| Iris Override | An override control that allows the iris opening, selected by the automatic exposure control, to be increased or decreased |
| Insert Editing | To add a new shot that goes over an existing shot on a videotape |
| insert edit | allows you to record over the video only (not sound) in camera. |
| In-Camera Editing | Shooting the shots in the exact sequence that they will be played back |
| ICM | Image Color Management. Windows-based software designed to work together with hardware devices to facilitate predictable color |
| Hyperlink | A link that allows the viewer of a page to navigate or ‘jump’ to another location on the same page or on a different page |
| Hydrophone | Underwater microphone |
| Hue | The name of a color, e.g. red, green or blue |
| HTML | Hyper Text Markup Language. The code that is used to describe the contents and appearance of a web page |