Letterboxing
Black margins at the top and bottom of the image. Letterboxing appears when a wider image is packed into a narrower frame without
changing the original aspect ratio.
Lumen
A photometric unit of radiant power. For projectors, it is normally used to specify the total amount of emitted visible light.
Luminance
Also known as ‘Y’, this is the part of an S-Video or Component Video signal which affects the brightness, i.e. the black and white part.
Modal setting
A projector setting that only affects the currently displayed input.
Noise
Electrical interference displayed on the screen.
NTSC (National Television Standards Committee)
The United States standard for television - 525 lines transmitted at 60 interlaced fields per second.
OSD (on-screen display)
The projector menus allowing you to adjust various global and modal settings.
Overlapping region
See blend region.
PAL (Phase Alternate Line)
The television system used in the UK, Australia and other countries - 625 lines transmitted at 50 interlaced fields per second.
Notes
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