Photographic Reflector White Balance  Gray Card 30cm Portable Reflector Gray Card Photographic White Balance Focus Board
*Gray side: Reflectance 17.8%; Density 0.74
* for Max. deviation of reflectance: 2%
* for Max. error in exposure measurements: 1/8 of F-stop
* This handy double sided pop up 18% grey/white card simplifies the complex technical issues surrounding exposure and color correction when working in different lighting conditions. It provides a major benefit when working under pressure at events such as weddings or fashion shows.
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