... , 55mm, 58mm,62mm, 67mm, 72mm, 77mm, 82mm White balance lens cap for CanonModels we supply: 52mm, 55mm, 58mm,62mm, 67mm, 72mm ... is as easy as putting the cap back on the camera, point the camera at the light source and then snap a ... time on the computer after shooting.The White Balance Lens Cap includes a standard white dome for neutral white balance readings ...