EntityQ740662· pop 31· linked from 210 articlescamera lucidaSign in to saveoptical device used as a drawing aid by artistsConnectionsopticsEntityLeonardo da VinciEntityLatinEntitySalvador DalíEntityAlbrecht DürerEntityJohannes KeplerEntityTaj MahalEntityInternational Standard Book NumberEntitymirrorEntityalgorithmEntityWilliam BlakeEntityHagia SophiaEntitypyramidEntitymicroscopeEntityJean-Auguste-Dominique IngresEntityParthenonEntityGreat Pyramid of GizaEntityartistEntitytaxonomyEntitydigital object identifierEntityCategoriesArtistic techniquesDrawing aidsOptical devicesPrecursors of photography