Product Features:

--The grey side is for accurate exposure and the white side is for setting the white balance. 

--If the photos you shoot are always too dark or too bright, blue or yellow, then use this.

--Double-sided design.

--the middle of the 18 degrees gray card with a secondary focus scale, the other side is pure white, which is the best way to tune the white balance color of photography, can be folded into the small bag when not in use, easy to carry and use

--Advantages compared to ordinary cardboard gray card: can be folded, easy to carry, PU leather texture is not easy to damage, dirty can scrub, long service life. 

Specifications:

--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

--Size: 30 x 30cm 

Package contents:

--1 x 12 "/30cm Grey/White Balance Card

--1 x carrying bag