Reproduction of dark areas, Black stretch/compress function), Camera features – JVC GY-HM700U User Manual
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Process the dark areas according to the balance of bright
and dark areas in the image to adjust the overall balance of
contrast.
1
Adjust [Black Toe] in the [Camera Process...] menu
according to the captured video signals.
2
Set the luminance point (Point Level) for
AStretchB or
ACompressB.
● Decide the luminance point (Point Level) at which the dark
areas in the image are to be stretched or compressed.
● The luminance point (Point Level) can be set within the
range of
A5% to 15%B.
3
Adjust the amount of
AStretchB or ACompressB.
● Set the amount to stretch or compress the dark areas in the
image using [Stretch Level] or [Compress Level].
● The amount of stretch or compression increases when a
larger value is specified.
Ⅵ Example
To increase the area of 10% level (Point A in the figure
below) in the image under normal condition ([Black Toe] is
ANormalB)
A
Set [Black Toe] to
AStretchB.
B
Set [Point Level] to
A10%B.
C
Set the amount to increase using [Stretch Level]
(
ALevel 1 to Level 5B).
The reproduction of dark areas improves as the 10% level
point A stretches toward point B. (See figure below)
Reproduction of Dark
Areas (Black Stretch/
Compress Function)
OUTPUT
INPUT
0
0
A
B
10%
5%
15%
When [Black Toe] is
AStretchB
When [Black Toe] is
ANormalB
Increasing the 10% area
[Point Level] set at
A10%B