2008

dialog. Once there, you can specify what channels (and what format) you
want to write out to the file.
See also:
■ RPF Files on page 7159
Interface
When RLA is the chosen output format, clicking Render or Setup on the
Render Output File dialog on page 5892 displays the RLA Image File Format
dialog.
Standard Channels group
The standard channels are RGB color and the alpha (transparency) channel.
Bits per Channel Choose 8, 16, or 32 Floating Point as the number of bits
per channel. Default=8.
Store Alpha Channel Choose whether to save the alpha channel. Default=on.
Premultiply Alpha When on, premultiplies the alpha channel. Default=on.
Premultiplying saves computation time if you later use this image in
compositing. For more information, see
Premultiplied Alpha on page 7900 .
Optional Channels group
For output RLA files, there are eight additional channels that you can generate
(and view in the rendered frame window):
RLA Files | 7157