World Position clamped

Hello,

After Rendering my Sequence as Absolute World Position (Post Process) in linear, uncompressed EXRs I saw that the RGB values are between 0-255. Compared to the same Export from Maya or 3DsMax the NEGATIVE RGB values are missing in the picture.

Is there a way to expand the RGB range or remove the clamping?
Or is there any better way to rather go by the Composure than using the regular Sequencer Export?

Best
Patrick