Pardon my ignorance, but isn't IR used only in low light conditions, not during daylight/lights-on conditions? I have super-cheap cameras that you can hear them click when they switch to IR mode when the sun has set.
IR can be used during any time of day. Versions of IR can be White Hot (black background while the "heat signature" is white), Black Hot (reverse if White Hot), or Full Spectrum Color (not as good for use during the day). What is commonly known as "night vision" is just the camera amplifying ambient light. It can be either what was once called "red haze" or "green haze" back in the 70's. All of those technologies were R&D'd during Vietnam.
Suckafree answered pretty well, but I'll touch on yours which click on, like baby cams. They aim to preserve power and usage life by reducing the time it is on until it is needed. Almost all security cameras broadcast the IR 24/7 to highlight dark areas and features of the individuals, but it also creates glare and reflection. A lot of savvy criminals will wear strips of reflective tape or something like that to blind the camera.
Pardon my ignorance, but isn't IR used only in low light conditions, not during daylight/lights-on conditions? I have super-cheap cameras that you can hear them click when they switch to IR mode when the sun has set.
IR can be used during any time of day. Versions of IR can be White Hot (black background while the "heat signature" is white), Black Hot (reverse if White Hot), or Full Spectrum Color (not as good for use during the day). What is commonly known as "night vision" is just the camera amplifying ambient light. It can be either what was once called "red haze" or "green haze" back in the 70's. All of those technologies were R&D'd during Vietnam.
Suckafree answered pretty well, but I'll touch on yours which click on, like baby cams. They aim to preserve power and usage life by reducing the time it is on until it is needed. Almost all security cameras broadcast the IR 24/7 to highlight dark areas and features of the individuals, but it also creates glare and reflection. A lot of savvy criminals will wear strips of reflective tape or something like that to blind the camera.