ARRI 416 Film Camera User Manual


 
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10.4.14 White Line Menu
The IVS can generate information on whether the current
video image corresponds to a new lm frame or whether
it is a repeated video image. The White Line ag displays
this in machine readable form.
Enter the White Line Menu from the Main Menu.
Changes made to settings are immediately activated.
Check all settings on a correctly adjusted monitor.
All video assists are based either on PAL or NTSC video
systems, with a xed video frequency of either 25 full
video frames per second with PAL or 29.97 full video
frames per second with NTSC. The speed of the lm
camera on the other hand can be selected over a wide
range. At every lm speed which is different from the
video frequency, the IVS has to add repeated video elds
to compensate for the different frame rates.
In practice the most important case is a lm camera speed
of 23.976 fps and a NTSC video assist.
This creates a situation described in the drawing.
MENU WHITE LINE
-> - WHITE LINE ON
- POSITION 10
- EXIT
Film
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Film
2
Film
3
Film
4
A1 A2 B1 B2 B3 A1 A2 B1 B2 B3
Video-Ait-Sytem