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The LPI has a CMOS sensor & the 2 webcams mentioned have CCD sensors. CCD sensors are more sensitive. The webcams take AVI's (movies) at IE: 10 frames per second, so if you capture for 1 minute you get 600 frames. You then (by using software) discard the blurry frames, keep the good ones & stack them into one image. I've owned all 3 imagers & I gave the LPI away free in a IIS competition we had awhile ago. The LPI did ok but it doesn't stand a chance against the webcams IMO.
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