Re: Low lux colour CMOS cameras?

May 18, 2004 1 Replies

One more question:



Am I getting confused by the physics? In other words, if I have a white light source of, say, 1W, will this be detected with the same efficiency by both a 3lux colour camera and a 1lux B&W camera? I ask this because I now know that lux is a psychometric unit - it takes into account the efficiency with which the human eye sees different wavelengths.



See:



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Thanks, Jack


Hi again,
>
> Does anyone know of a miniature color PAL CMOS camera sensative to 1 Lux

or


less?
>
> I have found very sensitive colour CCD cameras and fairly sensitive B&W

CMOS


cameras but no sensitive CMOS cameras.
>
> Thanks in advance,
> Jack
>
>

No. Broadly speaking, it'll be three times dimmer in the 3 lux camera. You need a camera several times more sensitive in order to have the same sensitivity when you convert it to a colour one by putting dyes above the pixels in various colours. The 1 lux camera may also be sensitive to infrared, which helps sensitivity, and does not have losses through dyes to contend with.

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