How to transform a LCD Colorimeter into a beamer colorimeter!

 Do you have a Colorimeter (like DataColor Spyder2) not capable of calibrating a digital beamer ?  Do you have an old lens?

 Great! So you can easily transform your simple LCD colorimeter in a projector calibrator. Just take a wide aperture lens, like this old Minolta 50mm f/1.7, clamp it.

 Than switch your beamer on, switch the light off, and set the proper distance between the lens and the colorimenter, in order to have the screen image covering all the device sensor.

 Remember, focusing here it is not important. What is important is that the colorimetric area will cover all the colorimeter sensor.

 Set the beamer at his zero settings (native White point, no color correction), and start your calibration like you did for your LCD screen.

Have fun, and save lot of money! You will not have to upgrade to a more sofisticated color light meter!