This seems to be about the "best fit" newsgroup for this question........... >
> I'm looking for (a) the manufacturer/model no. of CCTV cameras which
> automatically apply/remove an IR-cut filter and which are suitable for home
> security (say 10m - 15m IR range with a 1/3" CCD).
>
> Please NOTE .... I'm in the UK !!!
> (I've found a US company that makes/sells them - but that's no use here in > the UK.)
>
> FYI: "dual mode cameras have a mechanism built into the camera module
> that will remove the IR-cut filter from in front of the image sensor
> allowing an increased spectrum of light to be received."
A cheap Swann camera I use has an automatic switch between IR and colour depending on the lighting level. However it operates independantly across the field of vision -- i.e. a dark area can be operating in IR mode whilst a brighter object is visible in full colour at the same time. You couldn't do this if you had to move an IR filter in/out.
uk.tech.electronic-security is a more relevant group (cross-posted).