3M MP225a Pico Projector Review
A deplorably designed pico projector.
This color temperature graph may look a little erratic, but the peaks and valleys stay well within the perceptible error limit. You will not notice any tinting of your picture. There is a notable break into the cool at the darkest end of the spectrum, but the picture will be so dark that you should not see much of anything.
These curves have the essential shape that they need for accurate color reproduction. Each of the three primary colors reaches from 0 to 100% luminance with a nice little curve to them, but the up and down wavering of the graphs means problems. Each one of these bumps represents a color value that was not produced in accordance with the input signal. So for certain values of green, the wrong brightness was produced, some brighter than intended, some dimmer.
Again, with pico projectors we are not looking to replace our home theater. The color performance isn't great, but we are not looking for, or paying for, greatness. If we want to see a movie on the wall of our tent while camping, this will do the trick, with reasonable color performance.
We match the colors from the 3M MP225A to those of the international standard for HDTV, the Rec. 709. You can see that the black triangle below does not quite match the light gray one, specifically in the blue, green, and white values. The greens are undersaturated, the blues are a little oversaturated and skewed to the red, and the white point is looking a bit green too. The blues are the most inaccurate, with an error of more than 0.03.
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