GRASS VALLEY LDX 864K, Руководство пользователя

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LDX 86 High Frame Rate/HD/3G/4K Camera Platform User’s Guide (v2.0) 61
Chapter 4 - Video setup
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Note
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Note
When Gain is set to negative values, or values higher than 3 dB, the gain indicator in the
viewfinder lights (only for ocular viewfinders).
The gain switch can also be used to vary the gain continuously between its minimum and
maximum value.
1. Hold the switch continuously in the up or down position until you see the value in the
viewfinder change in steps of 0.1 dB.
2. Release the switch when you reached the value you want. This exits the value selection
mode.
3. Using the switch momentarily again sets the gain to the nearest preset value.
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Note
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Note
Selecting high gain levels may introduce more noise into the image.
4.3 Gamma
4.3.1 Gamma correction
To compensate for the non-linear response of display devices, a gamma correction is applied to
the video signal. The gamma correction adjusts the tonal response of the standard transfer
curve.
Gain Preset Gain (in HiQ and Nom mode) Gain (in HiSens mode)
- is always -3 dB is always -3 dB
0 is always 0 dB is always 0 dB
+ can be set to +3 or +6 dB can be set to +3, +6, +9 or +12 dB
++ can be set to +6 or +9 dB can be set to +6, +9, +12 or +15 dB
+++ can be set to +9 or +12 dB can be set to +9, +12, +15 or +18 dB
0 20 40 60 80 100
0
20
40
60
80
100
γ
= 1.00 (Master Gamma=0)
γ
= 0.35 (Master Gamma=100)