IR-cut or AR filter
All cameras have by default an IR-cut ( c o l o r) or AR (mono) filter mounted on top of the sensor. The user
has however an option to choose from different configurations:
- IR-cut filter with 650nm filter mounted on top of the sensor
- Clear glass filter (of the same size as the original IR-cut filter) mounted on top of the s e n s o r .
Check, whether you don't need special lens designed for specifically for use without IR-cut filter
(common lens might not focus properly in the infrared band or show other problems).
- Daylight blocking filter.
- Without any sensor cover mounted. This has impact on optical properties of the camera — the C-
mount flange distance from the sensor is accurately adjusted for the use of the IR-cut filterand
removing the filter decreases the length of the optical path. With some lenses and working area
setups it can become impossible to focus properly.