This kit contains three plastic cards in grey, white and black. The cards are great tools for digital photography, because you all, makes your goods lay in offers a perfect shooting. In this way the use for this a manual white balance, allowing you to a an unsightly white card Color Cast should be avoided. Meets the grey card variety of uses: Helps when measuring the correct exposure in difficult light conditions during manual white balance. It is meant as a reference charts for a supplement to the digital to working with photos. The black card supplied together with the white card abgelichtet, around the contrast Contents A design. Material: Plastic; Dimensions: 25 x 20 cm (W x H), listing is for a pack of 3 cards (gray, white, black), 1 transport bag etc.