Tiffen EK1527654T Tiffen Q-13 Color Separation Guide, 8"
The 8"-long Kodak Color Separation Guide and Gray Scale (Q-13) includes two strips for measuring and comparing gray and color values in all aspects of photographic work.The gray scale is a strip of 20 stepped, neutral values and an 18% gray background that will help compare tone values of the original with the reproduced image. For copy work, side-by-side comparisons of films, enlarging papers and color reproduction processes that require the use of masks, separation films and filters.