ARRI ARRIFLEX 416 - Manual (Page 121)

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Flicker free ON/OFF
Flicker free can be switched off to bypass the digital frame
store and have the video assist output with no delay.
The typical running speed for the film camera is different to
that of the video assist. e.g. the film camera runs at 24 fps
and the video assist at 25 fps for PAL or 30 fps for NTSC.
Without flicker processing this speed difference causes
varying brightness between successive individual video
images. To eliminate this so called flicker, video images are
stored at the speed of the film camera into the video frame
storage and recalled in the speed of the video system. This
storage might cause a slight delay, which is not desirable
in some time-crucial conditions, e.g. motion control or
shooting of a pop video. Therefore it is possible to switch
the flicker free system off. This will eliminate the delay.
However, flicker will occur in this mode.
In parallel to the control via keypad, the flicker free off can
also be programmed via the on-screen menu.
• Move the cursor > with the keys Ê and Ë to the line
– FLICKERFREE. Pressing the key Í or Ì will switch
flicker free mode off and on.
MENU VIDEO/TEXT ADJUST
-> - FLICKERFREE ON
- LINE INTERP. ON
- SHARPNESS 2
- BNC OUT VBS
Y/C DATA
- GENLOCK OFF
- MINI MON DATA ON
- TXT WHITE LEV. 2
- TXT INVERS OFF
- TXT FINE POS 2
- EXIT
Video-A
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t-Sy
stem
Note: The lowest camera speed for flicker free display
is 5 fps in automatic gain control mode and 1 fps
in manual gain control mode.