Panasonic AJ-PX230 Series, User Manual

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Apparent Integrated Characteristic
3-6. Technical description : Gamma
Gamma is a value that indicates the relationship between the levels of input and output signals of the camera or
monitor TV. Generally, it is said that linear Gamma (γ = 1) represents the image reproduction closest to the one seen
by the eye. However, the monitor TV has the Gamma characteristics that make the output level of its signal higher
and higher as the input level increases. (γ = approx. 2.2) So the camera corrects its Gamma and performs the
recording so that the Gamma will become close to linear in the end. (normally γ = 0.45, reciprocal value of 2.2)
The picture’s total atmosphere can be changed by this Gamma correction. So this function can be used for a more
active picture-making, e.g. film-like coloring.
Adjustment Items for Gamma: Main Menu [SCENE FILE] [GAMMA SETTING]
(Factory default settings underlined)
[MASTER GAMMA
］
0.30 - - - 0.45 - - - 0.75
Sets the Master Gamma in units of 0.01.
When [FILM-REC] is selected in [GAMMA MODE SEL],
[F-REC DYNAMIC LVL
］
200% , 300% , 400% , 500% , 600%
Sets the Dynamic Range.
[F-REC BLACKSTR LVL
］
0% - - - 30%
Sets the Black Stretch.
When [VIDEO-REC] is selected in [GAMMA MODE SEL],
[V-REC KNEE SLOPE
］
150% , 200% - - - 500%
Sets the Knee Slope.
[V-REC KNEE POINT
］
30% - - - 107%
Sets the Knee Point.
[BLACK GAMMA
］
(Depressing) -8 - - - OFF - - - 8 (Expanding)
Sets the depression and expansion of Gamma curve for dark areas.
[B.GAMMA RANGE
］
1 / 2 / 3
Sets the maximum level of compression / expansion. 1 (approx. 20%), 2 (approx. 30%), 3 (approx. 40%)
Gamma Curve of Monitor TV
Gamma Curve of Camera
Video Input Voltage Incoming Light to Camera Incoming Light to Camera
This is an example for explanation only and may be different from actual measurements.
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