I am looking to render the vector pass in a OpenExr format with all channels. I have rendered on both 2.7 and 2.8 and the generated images have an empty alpha channel. The compositor is set as follows:
Two issues arise, the first is that the alpha channel is missing on every image as can seen by the recorded rgba values at the bottom of the window in the image below:
Also where a zero value would be expected, it seems to be set to RGBA(0.0039, 0.0039, 0.0039, 0). As seen below:
The same issues spans different versions and scenes, is there something wrong in my configuration or is this a bug? Thanks for any help in advance!