Blown-out overexposed rendered EXR files

Hello - Host is after effects - Using stand-alone Silhoutte, I have imported a JPEG image sequence and created a roto from this; opting to export an image sequence in the OpenEXR Format in Silhouette.

The reason why I am doing this is because After Effects (which is my host) reads EXR files much faster than PNG’s; and I am using an alpha channel so i need a format that supports.

The problem that I am having is that the EXR files when rendered from the 8 bit Jpegs are blown out using silhouette; that is the alpha looks about 2 stops over-exposed. When I render to PNG using silhoutte, the alpha is completely consistent with what I am seeing in my imported JPEGs, no issues. But PNG’ sequences are horribly taxing using AE.

Any knowledge as to why these rendered EXR files are blowing out?

Thank You,


EXR is a 32 bit linear format and if you render a PNG sRGB source file to EXR, it will look too bright. You would be better of rendering to a RGBA TIF file in this case.

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Thanks Marco!