Vidikron Vision 20 - Manual (Page 48)

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Additional Information
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*ANSI Lumen specification:
This is the typical projector luminosity (brightness) specification found in most sales literature. This measurement is included in Vidikron
literature to allow for direct comparison with other manufacturer's projectors. These measurements can be taken at 9,000 to 13,000 degree
Kelvin to get expected performance data when the projector is used in professional, commercial, and industrial displays.
**CSMS Home Theater Calibration ANSI Lumen Specification:
These measurements are taken from the projector as setup in a home theater environment. The projector is calibrated to ISF specifications
including setting the color temperature to 6500 degree Kelvin, the standard for reproducing video.
**CSMS Home Theater Calibration foot-Lambert (fL) Specification:
This is the unit of measurement used in commercial movie theaters to express image brightness. The Society of Motion Picture and Televi-
sion Engineers (SMPTE) specifies 16 fL as the target image brightness for film-based projectors using an open gate (without film in the pro-
jector). More importantly, today SMPTE specifies 12 fL as the target image brightness in Digital Cinema theaters using DLP™ technology.
The foot-Lambert is dependant on screen size, screen gain, and projector light output.
All measurements are made at Vidikron to ANSI/NAPM IT7.228-1997 specifications using the Photo Research PR-650 SpectraColorimeter
and Minolta LS-100 Light Meter, Video Essentials test DVD, and a Stewart Filmscreen StudioTech 130, 1.3 gain, 72-inch wide screen. The
projector is calibrated to a color temperature of 6500º Kelvin and has a minimum of 150 hours of usage.