French for “advanced guard,” this term is used in English to describe a group that is innovative, experimental, and inventive in its technique or ideology, particularly in the realms of culture, politics, and the arts.
Baterie standardizata cu lungimea de 50 mm si diametrul de 14 mm, cunoscuta si sub numele de R6 sau Mignon.
Abbreviation: lm. Visible power output of light, generated light. Projector light output is measured in ANSI lumens. Higher lumen number means brighter image for given image size.
An enlarger that combinesdiffuse light with a condenser system, producing more contrast and sharper detailthan a diffusion enlarger but less contrast and blemish emphasis than a condenserenlarger.
The 4:2:2 video signal sampling system with the addition of a fourth component -- the key signal or alpha channel. Sampled at 13.5 MHz (at 74.25 MHz for HD).