Do you want to capture photos with rich color levels? Precise exposure is necessary. Now you need this 3-in-1 Small Size Gray Card for Digital Camera to correct your camera exposure and enhance the photo quality. This gray card is your optimal choice. This gray card has two sides. The white side can correct white balance and the gray side used as a reference area for exposure metering. This gray card is really a good helper for each photographer. Don’t hesitate to bring it home now! It will give you wonderful experience.                                    Features            It is a 3-in-1 gray card<br>One gray card has two sides. The white side can correct white balance and the gray side used as a reference area for exposure metering<br>High density paper-based composite material<br>Give you high-performance shooting effect<br>Perfect for professional photographers<br>                                                            Specifications             Gray Side     Reflectance 17.8%; Density 0.74    <br> Max. Deviation of Reflectance     2%    <br> Max. Error in Exposure Measurements     1/8 of F-stop    <br> Material     PVC    <br> Card Dimensions     (8.5 x 5.4)cm/ (3.35 x 2.13)" (L x W)     <br> Strap Lengths     50cm / 19.69"    <br> Weight     57g / 2.01oz     <br>                                                             Package Includes            1 xStrap<br>3 x The White Balance Small Cards<br>1 x User Manual<br>