... supply: 52mm, 55mm, 58mm,62mm, 67mm, 72mm, 77mm, 82mm White balance lens cap for CanonModels we supply: 52mm, 55mm, 58mm,62mm ... reference image for the use as your cameras pre-set white balance reference. So, no matter how challenging the lighting situation, ... on the computer after shooting.The White Balance Lens Cap includes a standard white dome for neutral white balance readings and a warm-toned ...