Phantom v1212, Руководство пользователя

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Phantom Ultrahigh-speed Camera Manual
Gamma is the nonlinear relationship between signal
level and brightness output of pixels, (a small signal
level change at low voltage produces a larger variation
in brightness than the same change in level at high
voltage). A linear gamma would have the value of 1.0.
The camera’s default gamma setting is 2.2, which is a
standard compensation for most video monitors.
EI (Exposure Index) is a reference value for the ISO
level of the current shooting settings. A camera’s default
EI value is measured at the default gamma of 2.2.
Increasing the gamma will also increase the EI, and
decreasing the gamma to a minimum value of 1.0
will decrease the EI. The EI can also be adjusted by the
adjusting the EI value itself, using the on-camera controls,
as indicated here. Increasing the EI adds gain to the video
image, the more gain that is added the more digital noise
will be visible in the resulting cine. Vision Research
recommends maintaining the EI as close to default
as possible for best image quality.
The Master black (Pedestal) parameter is used to
change the voltage level corresponding to black or
to the maximum limit of black peaks.
The gain can be adjusted in three separate color channels,
red, blue, and green.
The pedestal can be adjusted in three separate color
channels, red, blue, and green.
The gamma can be adjusted in three separate color
channels, red, blue, and green.
Master gamma
EI
Master black
Gain (R, G, B)
Pedestal (R, G, B)
Gamma (R, G, B)