Originally Posted by basementjack2
Joe - which projector do you have? How valuable is the colorvision spider thing - if I get that - is there still a need for a DVE or avia test disk? What does it measure (color? Brightness?) Are there techniques for measuring the color off the screen (vs pointing the thing at the projector - as I assume a high contrast gray screen would calibrate differently than a high gain white)
It sounds like something I'd like to have (though Hopefully when I get my new PJ, I'll be so thrilled that I never use it!)
I have an Epson 810 (US version of the TW700).
How valuable is the Spyder2 ? Not sure what you mean by valuable. It's a great low cost tool to get you started into the world of calibration. I like the Spyder because it's popular so its supported by most of the calibration software developers on the forum. For it's price avg of $70 and free software from the calibration forum you can't go wrong and there's some good free software to play with right now. There's certainly much more expensive sensor packages on the market going into the thousands.
The spyder2 itself is a sensor that will help you find out how well calibrated your projector is for very cheap. Once you get the graphs/readings on how close your colors are tuned to D65 and a gamma of 2.2, you can make adjustments to your projector to fine tune it. Besides if you're the type to like to play with this stuff it can be fun.
Some people do take readings with the spyder directly out of the lens, but most recommend placing it on a tripod facing the screen which makes more sense to evaluate what impact your screen has on the final picture characteristics and compensate accordingly.
You'll still need a copy of Avia or DVE for setting the basic brightness, contrast, sharpness, color & tint and generating test screens for the spyder.
Best thing you can do is read up on the calibration forum. There's some really bright people in there that can enlighten you much more than I can. Try to read up on HCFR and Calman programs.