Tbest Other Studio Flash Accessories,30cm Portable 18％ Gray White Balancing Card Double Sides Focusing Board Reflector Plate for Digital SLR Camera - Tbesthgpaxrts8b

• Used for: The focus plate can be used to measure the exposure value through a handheld meter, TTL SLR camera, digital camera and rangefinder camera with metering. The use of a three-color focusing plate is a guarantee for taking high-quality photos. 18% standard gray, gray board one side, with assist focusing scale, whiteboard one side, good tool for tuning white balancing, with portable bag. Rich levels: The focusing plate is the benchmark for accurate detection. Photos with rich layers and saturated colors come from precise exposure. If the light in the shooting scene is too bright or too dark, it may cause deviations in the exposure. Automatic and manual: Play the role of gray board, also suitable for automatic and manual lens practice at the same time. Focusing Board can make complicated light scene to change to the 18% neutral gray, through the light meter record the focusing plate reflected light, can get accurate exposure value.