Owner's Manual

of
24p
film converted to
60i
video. The "Difficult Edits" sequence can be
handled
perfectly by the best deinterlacers,
with
no
drops
out
of
film-mode. The "Very
Difficult Edits" sequence contains single fields
at
each edit
point,
which
cannot
be
perfectly reconstructed
in
film mode. The best deinterlacers will
drop
out
of
film
mode
for just a frame
or
two
on
each edit.
Edge Adaptive
These sequences are all
encoded
in
video mode, where the picture changes every
field. Since there are
no
progressive frames to reconstruct,
the
deinterlacer
must
interpolate extra scan lines
to
fill in the missing information
in
each field
and
..
make it
into
a full frame. The very best deinterlacers are able to interpolate
smooth
diagonal edges by detecting edges in the video
and
doing
special processing to
make the edges clean.
When
this
is
done
well, the various diagonal lines
in
the
video will
look
smooth
and
clean
and
not
jaggy.
Motion
This section contains tests to check for loss
of
resolution
and
dynamic range
on
moving objects. These tests are primarily to test the effectiveness
of
the
"120
Hz"
or
"240
Hz" modes
on
many
modern
displays, especially
LCD
displays. These modes
may
be called "MotionFlow" "TruMotion," "ClearScan"
or
some
other
proprietary
name.
Equal Energy Gamma
1his
section contains patterns for checking the effective
gamma
of
a display by eye.
The idea
is
to
put
up
one
of
the
gamma
patterns
and
then
use
the
left
and
right
arrow
on
the
remote
to
move
to
higher
or
lower gamn1a until
the
fine-grained
patterns
around
the center
window
have the same apparent brightness
as
the center
window.
When
the patterns
match
the window, the effective
gamma
can be read
numerically
off
the label
on
screen.
This
is
a simple way
of
checking
the
gamma
of
the midtones,
and
does
not
work
well
on
LCOS
displays because
of
the
way the display technology handles fine-
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