Boris FX Boris Calligraphy Vresion 2.0 Guía de usuario descargar pdf (Pagina 178)

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Chapter 4 Working with Effects and Filters

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2. From the menu, select a different filter.

Viewing Filters

You can turn the filters on a track on or off by using the Filter Visibility button. When the

Filter Visibility is on, the filtered output can be viewed in the Composite window and in the

rendered output.

Turning off a track’s filter visibility speeds preview time when you are not working with that

track. When off, the track appears unfiltered in the Composite window and in the rendered

output. In the following example, a Directional Blur filter is applied to the background track

and filter visibility is turned off to speed previews.

Working with Masks

A powerful feature when compositing is the ability to apply an effect to certain channels

(channel masking) or to certain pixels using a mask. A mask is a section of media that

contains an alpha (transparent) channel, which is used to hide part of another image.

Each Shape and Face track contains a Mask track. When you apply a mask to an object, the

object becomes transparent wherever the mask's alpha channel has a value of 0 and remains

opaque wherever the mask's alpha channel's value is 255. Intermediate alpha channel values

produce semi-transparent areas in the object.

Filter Visibility button

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