The Grey Balance Board is a double-sided neutral reference target, ideal for grey and white balancing in both traditional and digital photography. The board features an 18% reflective grey surface on one side and a 90% reflective white surface on the reverse. Both sides have been scientifically prepared to be spectrally neutral, reflecting light in the same way in any conditions. Take a test shot of the Grey Balance Board at the start of a photo session using your camera’s custom neutral balance setting – you can then set the camera to use this balance for subsequent shots. Test shots of the Grey Balance Board can also be used for post-capture editing within Photoshop. Each pack contains two 20 x 25cm (8 x 10") Grey Balance Boards.