Includes 2 DKK Cards - Each with Precision 12% and 18% Gray reference for white balance plus 18-Color patches for superior digital color correction * Array of 18 color patches with natural, chromatic, primary and gray scale colors, arranged in three rows. * Convenient 5" x 7"" (127 x 178 mm) double-sided screen print construction, archival quality acid-free materials and full user guide * Includes convenient paper frame folder to protect the card surface and allow easy tabletop display during use. Card slides into folder from the side. * Detailed instructions included for Picasa , Photoshop Lightroom , Photoshop Elements and Photoshop