Draper Inc has announced its 4K-ready TecVision XH900X Grey projection viewing surface has been certified by the Imaging Science Foundation (ISF) for “excellent colour reproduction and fidelity”.

To be certified by the ISF, a screen has to have a flat spectral response or colour fidelity.

According to ISF president and founder Joel Silver, traditionally projection screens have fooled the eye that things are brighter by using blue tints.

“The problem is that if you accentuate the blue that means you aren’t getting the greens or reds you need to build a colour-accurate image,” he explains. “We want to take whatever the artist created and bring it to the screen with fidelity.

“We basically tie ourselves into something called a pure white matte screen – a screen that is a reference colour. The picture you get is what was it was meant to look like from the factory – not tinted.”
Currently available in six versions, TecVision features white surfaces with gains ranging from 1.0 to 1.9 over wide viewing cones and grey surfaces with performance under higher room light levels.

“Finding the colour fidelity of high gain materials close to that of no gain materials was wonderful,” says Joel. “Gain without a price to pay is a wonderful thing. I knew from measuring luminance even without the specifications that these screens were high gain, but I wasn’t seeing the penalty of colour shift.

“It’s a great challenge,” Joel continues. “Adding gain without paying a penalty in colour fidelity requires careful engineering. Compliments to the engineer!”


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