To calibrate the brightness levels of your portable digital projector, you’ll need to have a sample picture that you can use to adjust the brightness. You’ll also want to let the projector warm up for at least 5 minutes and try to do your calibration in a dark room.
For the sample image, you’ll want to use something with high contrast (i.e. totally black and totally white) sections. Some portable digital projectors come with sample images already preloaded for calibration.
Start calibrating your portable digital projector by turning the brightness level all the way up. The image will now look faded and washed out. Then bring the brightness down until the black parts of the image turn as dark as they possibly can.
Now you can fine tune your calibration. Examine the white areas of the image. The whites should still be white, not gray. If the white areas are gray, then you’ve gone too far down, slowly adjust the brightness up again.
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