The Tiffen Color Separation Guide contains both a traditional black and white gray scale as well as a color step wedge. This accessory is used for making color separations as well as assuring proper color and contrast balance in color photography.
The Tiffen Q-13 Color Separation Guide (Small) is a compact yet highly reliable reference tool for reprographic and editorial image production. Its clearly calibrated grayscale and color patches provide an objective standard for evaluating exposure, tonal separation, and color fidelity during capture and reproduction. Particularly useful in publishing contexts, it facilitates consistency across scans, proofs, and final outputs, helping ensure accurate translation from original artwork to print. A simple but indispensable aid for any editorial workflow where color control and tonal precision matter.
if you still have and use your dark room great to see if your black and whites are true, also great to see if you digital camera body is calibrated right.