PANAVISION Genesis, Руководство пользователя

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Panavision Genesis Manual v1.3
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20
V39
allocates less information to color than black and white. Historically,
the numbers 4 and 2 refer to the multiples of a reference frequency.
The important thing to remember is the ratio of information.
2.8 Variable speed
Genesis cameras can shoot and record at any fixed speed from 1 to
50 fps. However, the camera does not ramp between speeds. The
SRW-1 VTR does not record 4:4:4 at speeds over 29.97 fps. In
order to accommodate the immense amount of data generated at
speeds of 30 fps and above, the camera must be switched to 4:2:2.
Panavision recommends that you consult chapter 23 before
recording variable speed. Note that, at present, the SRW-1 cannot
record variable speed correctly when separated from the Genesis
camera body.
2.9 Shutter angles
The Genesis shutter can be set at any angle between 3.8 and 360
degrees. Shutter angles above 200 degrees are new territory for the
film cinematographer, yielding a different exposure, and a different
rendering of motion. At 360 degrees (or “Shutter Off”) the exposure
time is twice as long as it is at 180 degrees. Therefore, the 360
degree shutter captures more motion blur, and more light, than 180
degrees.
You can use the shutter for artistic effect or to gain an additional
stop of exposure or both. Some cinematographers experiment with
a range of shutter angles between 180 and 360 to creatively
modulate the resulting exposure gain and motion blur.
The effects of HMI lights are identical on Genesis and film, and
require similar shutter settings. The advantage of Genesis is that