The color values of Opteka Digital Grey Card set have been tested under varying light conditions and show a high degree of spectral neutrality. Using the industry-standard X-Rite spectrophotometer, LAB values of L* 63.8, a* -1.6, b* -0.4 are measured from the surface of the grey card under D50 standard illuminant. For optimum color correction, the black card achieves truly deep blacks (RGB 16,16,15). The grey card displays superior spectral neutrality with measured values of 162, 162, 160. The white card has a tested RGB value of (220, 224, 223). All three cards have excellent uniformity across a range of light sources.Price: $39.99
The Opteka padded camera grip wraps around the hand, and is designed to stabilize a camera or camcorder when shooting, and to alleviate fatigue during extended sessions of photography or videography. Compatible with all Canon, Nikon, Sony, Olympus, Pentax, and Samsung DSLR cameras that feature a standard 1/4"-20 tripod socket .