Photographic filter
CAMERA ACCESSORY CONSISTING OF AN OPTICAL FILTER
Daylight filter; Filter (photography); Lens filter; Filter ring; Filter mount; Filter thread; Cross screen filter; Photographic filters; Red Black and White filter; Camera filter; Series filter
In photography and cinematography, a filter is a camera accessory consisting of an optical filter that can be inserted into the optical path. The filter can be of a square or oblong shape and mounted in a holder accessory, or, more commonly, a glass or plastic disk in a metal or plastic ring frame, which can be screwed into the front of or clipped onto the camera lens.