Quote:
Originally Posted by lacad01
my guess would be UV/IR  |
Colour CCD's are sensitive to IR, so they stick in the IR filter in front of the CCD (looks greenish). It is supposed to even out the colour spectrum for colour cameras.
Some people take it out for low light operations.
Usually B/W cameras have higher sensetivity that colour and using RGB filter with appropiate software can work well. Bit fiddly, I have seen some low lux colour cameras out there recently. I can get a hold of 0.01 lux cameras, cost a bit though.
EDIT - .003 lux