Following from the previous post, there is much love for the PS3 Eye Camera. Not only is it USB, super cheap, and sports nice open source software - it can do infrared (IR) video really easily.
So, after testing some lights it was time to make a few diffusers for the favorite model and conduct further testing.
Both the Diffuse 3mm PLA & the Transparent 3mm PLA from Cubicity were used in the testing. There was noticeably more light diffusion in the Diffuse filament - almost too much. The transparent kept it nice and bright. Thicknesses of 1mm, 2mm, and 3mm were used. Same camera settings for each shot.