I have mounted the diffuser https://www.thingiverse.com/thing:4036102 in transparent color and the light is very whitish, too pale, as if I had to give more contrast to the camera.
I have tried to bring the diffuser closer to the leds and it seems more appropriate. Is this possible? I have also tried the diffuser https://www.thingiverse.com/thing:4819205 and the camera goes blind only sees light, no image.
I haven't started testing with the polarizer yet. The truth is that with the Arduino version it was much simpler, but I hope and believe that with Raspberry Pi better results can be achieved.