acetate angle black blue brown clip clips close colour colours copyspace display green isolated macro office orange pen pens pink presentation purple rainbow range red spectrum stationery top UP white background border cameras celluloid edge film film strip footage frame gradient illustration imagine media movies pastel photography production ribbon shoot tape texture video 16mm education educational entertaining entertainment equipment feed films gauge length light long metal perforated perforation plastic plastics projection projectionist projector reels screen screening showing Sizes spools standard width wind winding