[Cin] OpenEXR DWA compression blog post from 2014

[Andrew Randrianasulu]

http://fnordware.blogspot.com/2014/08/dwa-compression-in-openexr-22.html

DWA compression in OpenEXR 2.2
"The default Compression Level setting is 45.0, which creates a visually 
lossless image that is often less than half the size of its truly lossless 
Piz counterpart. "

So, I included it in my OpenEXR patch ....

Not sure if you can call ILM library to do pixel format conversion so B44 will finally work?
Time to more research!

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