NEEWER 18% Gray / White Card Set Step-up Ring or open the aperture for

or open the aperture for proper exposure

the camera can be fixed in any desired position

portrait photos & video recording

the inner surface of the clamp has rubber padding to protect your tripod from scratches

NEEWER 18% Gray / White Card Set Step-up Ring or open the aperture forDescription An excellent picture is produced with precise exposure. If the light in the scene is excessively bright or dark, exposure deviation might be produced. Gray card can balance all mixed lights to be 18% neutral gray. With a photometer, youll get a precise exposure value by means of recording the light that was reflected from the grey card. (it can measure the exposure value through the exposure photometer, the TTL SLR camera, the digital