How do I use a world HDRI without lighting the scene? I only want it to appear in reflections (and maybe the background - not sure yet), but I want to manually light the scene with light objects. This applies to both Cycles and Eevee.
I usually surround all the scene with a big sphere like this:
then apply the map to the sphere and regulate the intensity of the background with strength parameter to make it coherent with desired lights this way:
And since there is no need to keep HDR informations, I convert image to simple jpg because is a lot smaller. Result is like this:
Hope it helps!