Imagine you purchase a new high performance vehicle rated at 420 horsepower, yet when you drive the car it just doesn’t seem like it performs like a 420 horsepower vehicle should. After researching a little more you find that the manufacturer rates the horsepower as measured on an indoor track with an artificial tailwind, but in real driving conditions the measured horsepower is more like 150. I realize this is a bit unrealistic, but so is providing brightness specifications on a projector purely measured on the output of white light.
I was recently made aware of the new Color Light Output (Color Brightness) standard that was published in May of 2012 which now not only measures the brightness of White Light Output or White Brightness, but also Color Light Output or Color Brightness. Additionally I was surprised to see that projectors from some of the most well know manufacturers in the industry have a significant difference between their published lumens spec and the tested Color Brightness. In many cases the tested Color Light Output was less than 25% of the published lumen spec and some are even more extreme, for example a WXGA projector rated for 7500 lumens that had a tested color light output of only 1250 lumens.
3LCD technology, found in all Epson projectors, uses 3 chips to deliver vibrant, true-to-life and consistent images and does not use a color wheel like single chip DLP projectors and does not force a trade-off between White Brightness and Color Brightness. It is important to note that all Epson projectors have the same Color Brightness as they do White Brightness so that when compared with similar spec’d single chip DLP projectors the Epson will provide a significantly brighter image with much better color accuracy.
The current lineup of Epson large venue projectors range from 4500 to 11,000 lumens (White Brightness and Color Brightness) with resolutions including XGA up to WUXGA incorporating high end features like edge blending and geometric correction and a wide selection of lens options. Projector buyers should look for and demand both numbers – White Brightness and Color Brightness.