Blackmagic Forum

What happens to the bit depth when I use the OCIO color space node to take a linear OpenEXR to sRGB to match the other plates I'm using? Does it change the bit depth to 8-bit? If so is there another way to adjust for the gamma without degrading the bit depth?

Very, very new to the whole compositing world. Using Modo here.

bit depth and gamma space are not connected, but be sure you can use sRGBf (f = float) in the OCIO space node.

in general it would be better to convert you sRGB footage into linear space and work in linear and convert to sRGB only at the ouptut. nearly all compositing math and nodes in fusion expect linear inputs.
you will then use a viewer LUT to see the gamma corrected result in the viewer.

a very good tutorial is here:
http://www.comp-fu.com/2012/02/linear-g ... in-fusion/

Thanks Michael. That's exactly the kind of information I needed.