ARRI 416 Manuel D’Utilisation

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Video-A
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If the on-screen program mode is on because the settings 
are changed, the Menu (M) position clears the screen. For 
example, if color is to be changed with the on-screen 
program tool, the on-screen program window overlays the 
image. To see the image and check its color appearance, 
go to M position. The window disappears but the on-screen 
program mode is still on. By releasing the switch, the 
window will come back in the programming mode.
10.3.2 Mechanical Iris 
Only a relatively small portion of the light that passes 
through the film camera’s lens reaches the CCD chip of 
the video assist, because the light is shared between the 
view finder, the CCD Chip and the film. Therefore, the IVS 
lens is designed for normal use with a totally open iris so 
the maximum amount of light falls on the CCD Chip. 
Variations in lighting are compensated by the IVS gain 
control (automatically or manually).
Under certain conditions, such as when lighting is set for 
low sensitivity film (under 100 ASA), it may be that the 
IVS gain range is exceeded. In this case the mechanical 
iris of the IVS lens can be closed.
iris