Thanks, Sal - please forgive my ignorance - I only ever use DS for the CCT, but I guess I must start learning to use it for renders. I found the HDR converter - don’t know how, just clicked away and there it was. Anyway, I clicked on that and it asked for an HDR file, which I located - I have hundreds of them.
It went through some process, but the render was blank. I then looked into my HDR folder and found it had converted to tiff - now how do I get that into Studio to use in a render?