36
4.8
Ground Glass Cancellation (GGC) On/Off
All video assists capture the image they see on the ground glass of the film
camera; this ensures that the framing and the impression of depth of field
are identical between the film and the video assist image. The ground
glass is an integral part of the optical viewfinder, a feature of 35 mm film
cameras much loved by camera operators. Unfortunately, the ground
glass also creates a visible texture on traditional video assists.
By recording one or a few images in neutral grey whenever a new ground
glass is placed into the camera or an extreme wide angle camera lens is
used, the HD-IVS knows the precise ground glass texture and can use its
powerful image processor to remove it from the images. This Ground
Glass Cancellation (GGC) technology delivers a clean preview image
without any distracting texture.
4.8.1
Using the Keyboard
Note: The setup of the GGC
can be done only in the
on-screen menu as
described in chapter
5.10 CCG Control
The Ground Glass Cancellation can be switched on and off using the
keyboard. Pressing the key longer than three seconds will switch GGC
on and off. The illuminated LED shows the ON mode.
→
Photo
Note: pressing the key briefly (less than 1.5 seconds) will allow change
the GGC Iris value. See next chapter
4.9 Ground Glass Cancellation Iris
Setting for details.
The LED in the keyboard will follow the changes which are made in the
menu and vice versa, if this setting is changed via the keyboard, the on-
screen menu will follow.
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