Page
28
of
45
Call the AVPro Team at –North America 877-886-5112 Interna1-605-274-6055
This pattern is used to choose a basic Color Temperature mode, for displays that have selectable
color temperature.
Without special test equipment, it is impossible to set this perfectly, but it is possible to avoid
obviously incorrect settings. The goal is to get the pattern to look like neutral white and gray with
no obvious color tint. Color temperatures that are too low will look yellow or orange tinted, and
color temperatures that are too high will look blue tinted. If your display has a “D65” or “6500K”
setting, that’s likely to be the best choice. This may also be warm 1 or warm 2 modes.
If you have a 6500 degree “natural light” lamp and an 18% gray card, you can light the card with
the lamp in an otherwise dark room and choose a color temperature that matches it as closely as
you can. Otherwise just choose the most neutral white available.
Color Space Evaluation – ISF Color Multiburst
This pattern is used to choose the most appropriate output color space from your Blu-ray Disc
player and/or video processor.
Spears & Munsil explanation of pattern: Because chroma is upsampled when converting 4:2:0
YCbCr to RGB, in a sense every display scales this pattern, even a native 1080p display. In some
cases the player scales the chroma vertically to produce 4:2:2 YCbCr, and then the display scales it
horizontally while converting to RGB. Or the player may output RGB, in which case the player is
doing the chroma scaling. For players that have different output options over HDMI, you can
change them while viewing this pattern and see the differences in how the player and the display
handle the chroma channel. The individual sine waves in the center of each burst should look
even, with no color shifts or intensity shifts on either side of the peaks. The waves should look
smooth and not posterized. If the last burst turns gray, it tells you that the display is scaling the