EntityQ376733· pop 18· linked from 218 articlescardinal pointSign in to saveterm in Gaussian opticsConnectionsfocal lengthEntitydiaphragmEntityrayEntityphotographyEntityanatomyEntityInternational Standard Book NumberEntityatmosphere of EarthEntityvacuumEntitylineEntitypointEntityimageEntitydigital object identifierEntityrefractionEntityparallaxEntityQ180686Entityrefractive indexEntityhuman eyeEntitybibcodeEntitylensEntitydioptreEntityCategoriesGeometrical opticsGeometric centersScience of photography