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6. Additional Information
Runco CL-710/ CL-710LT User’s Manual
30
*ANSI Lumen specification:
This is the typical projector luminosity (brightness) specification found in most sales literature. This measurement is
included in RUNCO 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 Television Engineers (SMPTE) specifies 16 fL as the target image brightness for film-based projectors using
an open gate (without film in the projector). More importantly, today SMPTE specifies 12 fL as the target image
brightness in Digital Cinema theaters using DLP(tm) technology. The foot-Lambert is dependant on screen size, screen
gain, and projector light output.
All measurements are made at RUNCO 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 6500
o
Kelvin and has a
minimum of 150 hours of usage.