Owner's Manual

what
to look for
in
each:
Chroma
Alignment
The center
of
the
Color
Space Evaluation pattern contains shapes
that
are designed
to show any horizontal misalignment between the chroma channels
and
the
luma
channel. These misalignments can be caused by mistakes
or
shortcuts in the chrotna
upsampling,
and
it's
not
uncommon
to find
that
changing the format sent from
the player to the display changes the
amount
of
chroma misalignment.
Look at the eight long thin
diamond
shapes to the left
and
right
of
the center
of
the pattern. Each
of
them
has a single straight line
of
chroma pixels laid
on
top
of
a long skinny
diamond
in the
luma
channel.
When
the alignment
is
correct,
the
chroma
should be centered
on
the diamond,
and
the
diamond
should look
completely symmetrical,
with
the same
amount
of
color overlap
on
both
sides.
Most
people find
it
easiest to see the alignment clearly against the gray background.
The difference can be quite subtle,
on
the order
of
a half-pixel shift.
Put
a check in the row labeled
"Chroma
alignment" for any
mode
where the
chroma lines are centered in their diamonds.
If
multiple modes have properly
aligned chroma,
put
a check for all
of
them.
If
none
of
them
are properly aligned,
put
a check for the mode
that
is
the closest to correct,
or
for none
of
them
if
none
of
them
are close to correct.
Chroma Bursts
Near the four corners
of
the middle section
of
the pattern are twelve sets
of
thin
colored straight lines, three in each corner. There
is
one
horizontal, one vertical,
and
one
diagonal
in
each corner,
and
each corner has a different color combination.
These sets
of
lines are called
"bursts"
or
"frequency bursts".
Next to each
is
a small
"zone plate"
pattern, which
is
a set
of
concentric colored circles.
The bursts should have clear, bright colors
that
look identical to the colors
in
the
circular patterns next to them.
If
the colors are muted,
or
the burst looks solid gray
or
any
other
color, it shows
that
chroma resolution
is
being lost during one
of
the
14