For the Film Timer
Reading the gray densities of the KODAK Gray Card / R27 provides an objective evaluation of film exposure.
Generally, you will time your dailies using a color analyzer. However, for those scenes where the Cinematographer used special lighting or intentionally altered exposure, the KODAK Gray Card / R27 provides a good reference to establish printer lights which best preserve the Cinematographer's intent.
Using the KODAK Gray Card / R27 to time special scenes
- Read the red, green, blue densities from the gray portion of each card on the film.
- Use these values to establish your initial timing for the scenes following the gray card reference.
- Verify your timing on a color analyzer based on the lights you have determined best for the gray card exposures.
Note: A normally exposed 18% grey card has RGB transfer points of 25-25-25. One t-stop is equal to about 7 printer points or 7 transfer points.