I'm a film-maker; I have been directing, producing, shooting, and supervising VFX for about 20 years; and recently have been learning and using HDR Light Studio more and more - and I love it.
I use HDR with Houdini - and probably soon with blender.
I mainly work in TV and commercials; recently I was the creative director on an AR based commercial for EE - https://vimeo.com/498000219 - where I used HDR to help develop the concept of various flying objects encircling Rita Ora.