[18% Grey Card Reflector]: The grey side of white balance card and white balance card for videography simplifies the complex technical issues surrounding exposure and color correction when working in different lighting conditions, white balance grey card | [Grey Card Photography Adjust Color]: Gray card simplifies the complex technical issues, surrounding exposure and color correction when working in different lighting conditions; This handy double sided pop up 18% grey/white card and white balance card photography simplifies the complex technical issues surrounding exposure and color correction when working in different lighting conditions | [Photographic Light Meter Grey Cards Two Color Board Function]: This handy double sided up 18% grey and white card works for the exposure correction and white side for white balance setting, which can be used as a reflector, gray card photography white balance color checker | [Grey/white Card Kit Provide A Standard Reference Object]: This 18% grey card provides a standard reference object for exposure determination in photography, double sided portable grey/ white board is ideal for getting your white balance right in seconds and always have the perfect exposure | [Gray Card Reflector Keep Exposure Consistent]: By placing a photography gray card and double sided grey/ white board in the scene to be photographed, oriented at a defined angle relative to the direction of the incident light, and taking a reading from it with a reflected light meter, the photographer can be assured of consistent exposures across their photographs