Fri Apr 06, 2018 12:46 am
It depends on your needs; that's why there are several options. If one were "best" then the others wouldn't be offered.
The OpenEXR wikipedia entry contains a decent summary of the different compression methods. It leaves out that DWAA only uses its lossy method for RGBA channels. Auxiliary channels like Z, Normals and World Position are stored with (I think) Zip compression.
Zips is optimized for software that uses scanline rendering, such as Nuke. It will usually be larger than normal Zip because it can't compress vertically. Fusion renders the entire image at once, so it receives no benefit from the scanline compression method.
Bryan Ray
http://www.bryanray.name
http://www.sidefx.com