This indoor dome color camera has a 1/3" Panasonic color digital signal processing CCD video sensor and a varifocal lens with an auto-iris that makes it ideal for placement in a an area where you may need to change the camera position and focus from time to time. The auto-iris makes sure enough light always reaches the lens, which is useful in areas where the ambient light level is constantly changing due to cloud cover, doors & windows opening and closing, and other factors.