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.
Useful for photographers utilizing the Zone system.
The Color Control Patches are for photos that will be used in web offset printing. Contains standard separation colors used in RGB and CMYK processes, that helps match the color in the reproduction to the original.
Can also be used in comparing the relative reproduction characteristics of different films and papers.