HDR textures in Lights

[Roboto]

Hi, I came across this HDR studio light set
https://www.pingo.nu/vfxtools/

tried to use it but I cant get it to work.
if the image is mapped to a plane with a texture emission node the whole plane emits light
when mapped to alight I get a full square as well, I was able to get somewhat proper lighting at some point, but there was always a bright square in the middle of the image.

What would be the proper workflow to use this images?
the image 2017-09-07 01_09_36-HDR_Studio_lights.pdf.png is how it should look

thanks in advance

[Roboto]

here is the project file

[bepeg4d]

Hi Roboto,
here is my attempt:

HDR_LIGHT_TEST_b.c4d.zip

(109.3 KiB) Downloaded 127 times

ciao beppe