ISOCAM will provide imaging capabilities across a field of view of up to 3 arcmin diameter. It consists of two optical channels, one used at a time, each of which contains a pixels infrared detector array. The short wavelength channel (SW) operates between 2.5 and 5.2 m, the long wavelength channel (LW) between 4 and 17 m. Each channel includes different magnification lenses and filters.