642 Appendix B Image Reference
Gray25, Gray40
Description The Gray25 image is shown below.
GrayBar
Description The primary version (shown below) has 16 full-height vertical graybars. The intensity of
the bars is shown below. The secondary version splits the field into a top and bottom half.
The bars in the bottom half of the screen are in reverse order.
Test Video color tracking (color monitors)
Purpose To verify that a color monitor accurately reproduces colors at all intensities.