Hi,
I'm resurrecting that thread after 7 years, I basically wanted to know if there has been more discussions about that matter in the recent years.
The fact there is no standard attributes for common camera data prevents a bit the format to be used as a solid input container for photo processing applications or anything relying on EXIF data. For instance if you want to stitch EXR files with PTGui you will have to enter your data manually.
I think it would be really important trying to establishing a standard list of attributes as suggested by Thomas Lock, the exrstdattr already provides a list of them, maybe completing / updating this one?
Cheers,
Thomas