Hi Jaydekay11,
To collect files around the internet, not the way learning makes fun, I get your point.
For the time being, there are also many “HDR” images in the content browser.
They are only in Radiance format, which is not at all a 32bit/c format, but it works as they are.
Radiance is a 8bit/pixel (or RGB) with a kind of multiplier in a fourth channel RGBE, and from my point a good “delivery format” (but not even close compared to an OpenEXR which doesn’t destroy so much data from the start), if you don’t change too much the information at all, you’re fine.
The color “resolution” is quite limited, but the “light” dynamic is quite high, in fact beyond anything else, even on this planet.
I hope it will do for now.
The Physical Sky object delivers perhaps from the start more fidelity than these “HDR"s.
All the best
Sassi