TE264 16:9
OECF 20 ISO 14524 / 15739 revision

The former OECF chart contains 12 or
20 gray patches in a circular order and
three different patterns in the center of
the chart. The current version of the OECF
chart skips the center patches due to the
sometimes occurring straylight. This chart is
also offered as TE264X where the 20 gray
patches are not rasterized as in the standard
version of the chart created on a very fine
grained film.