optical transitionsoptical view finderoptical voiceoptical zoomopticalsopticoloroptiqueorange red coloured couplerorchestra boxorchestrationorder for optical printorder of magnitudeorganorgan consoleoriginaloriginal imageoriginal negativeoriginal picture negativeoriginal sourceorthochromaticorthochromatic filmorthochromatic panalomic x panchromaticorthoscopicorwocoloroscaroscillating mirroroscillating shutteroscillatorosicllographosicllographic analysisoutout door lightingout door sceneout door shootingout door shotout inout of focusout of focus to focusout of frameout of phaseout of syncout takeoutdooroutlineoutputover chargingover craningover crankover crankingover deviation
