Apple Shake 3.5 Betriebsanweisung PDF herunterladen (Seite 37)

Film Correction

THE “MORE” CONTROLS

Roto-Screen Correction

Advanced Controls

overlay in those areas where the Green Value is greater than the Red

Value in the original foreground image.

• Brights (B>R) {for greenscreen}: Use this control to include or exclude bright areas from the screen

overlay in those areas where the Blue Value is greater than the Red

Value in the original foreground image.

• Brights (R>G) {for bluescreen}: Use this control to include or exclude bright areas from the screen

overlay in those areas where the Red Value is greater than the Green

Value in the original foreground image.

• Brights (R>B) {for greenscreen}: Use this control to include or exclude bright areas from the screen

overlay in those areas where the Red Value is greater than the Blue

Value in the original foreground image.

• Overlay Color: Use this control to change the color of the overlay.

• Overlay Opacity: Use this control to adjust the opacity of the overlay.

Film Correction Controls to reduce the effects of cyan undercutting • only available when Matte Correction is ENABLED

Due to the nature of ﬁlm’s emulsion layers, a phenomenon know as "cyan undercutting" exists that reveals

itself as a smeared red edge in areas of sharp transitions, which can best be seen by viewing the individual RGB

channels of a ﬁlm image. Normally, this phenomenon is not a problem until bluescreen compositing techniques

are applied. Since the red emulsion layer tracks at a slower rate than the blue and green emulsion layers, the

artiﬁcial red edge it produces will be retained as foreground detail resulting in an unacceptable composite.

AdvantEdge attempts to reduce the effects of cyan undercutting in the following manner:

Enable the process by clicking on the Film LED in the right hand

section of the AdvantEdge control panel to enable the Film Correction

Process.

The goal is to create an overlay over the foreground subject that

does not intrude on any transitional edges or screen area.

The results of these controls can best be seen while viewing the composite. Alternatively by clicking on

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Apple Shake 3.5 Betriebsanweisung Seite 37