灰卡（卡纸的一种）英文怎么说？

灰卡（卡纸的一种）英文怎么说？

灰卡 Grey Paperboard

同样，以此类推——

白卡White Paperboard
黑卡Black Paperboard

Gray Card What is a gray card? Camera light meters see reflected light, but it is often useful to know the incident light (the light hitting your subject). With an 18 percent gray card you can get a reflected light reading which is essentially the same as reading incident light. Our gray cards are made from mat board. They have been painted to give results similar to an 18 percent reflectance Kodak gray card. This is equivalent to zone V. In the zone system, V is the middle tone half way between black and white.

灰卡是精确检测曝光量的基准。层次丰富、色彩饱和的照片来自精准的曝光。如果拍摄场景的光线过亮或过暗，就可能导致曝光出现偏差。 灰卡能将复杂光线的场景一律平衡为18％的中性灰，通过测光表将灰卡的反射光记录下来，就能获得精确的曝光数值！ 灰卡适用于手持测光表、ttl单反照相机及带有测光的旁轴式照相机。使用灰卡是拍摄高质量照片的保证、是摄影师的必备工具！

Grey Scale