Neewer 2 Pieces Grey Card Set, Custom White Balance 18 percent Gray Reference Reflector and Exposure Control Photographic Cardboard Kit (8×10 inches, 4×5 inches) for DSLR, Video, Film and Photography

Descriptions:An excellent picture is produced with the precise exposure.If the light in scene is excessively bright or dark, exposure deviation might be produced.Gray card can balance all mixed lights to be 18 percent neutral gray and you'll get...