Yeah, great summary Matt Here you can find additional infos on how creating "REAL" panoramic HDRI. Technical infos https://www.cgtechniques.com/tutorials.php ("How to create HDRI dome" tutorial is another explanation ... like the one from Matt (https://hdrshop.com/ too)) Some really good and famous ones ... https://www.debevec.org/Probes/ https://hdri.3dweave.com/library/ https://tengaal.art.chez-alice.fr/Pag...rage/hdri2.htm Lots of them there ... no need really to create yours hehehehe. These are also usefull (not relative to HDRI) but environments panoramas. With a bit of tweaking and toshop, I usually get great 360*360 to be used as backdrop (reflections) or just as environment background. https://www.meteobelgium.be/gallery https://www.1000skies.com/fullpanos/index.htm https://www.bretagnepanoramique.com/payscornouaille.htm Some last ref I advise you. It's mainly talking 'bout IBL New Maya7 Node and some plugs and additional tools. https://www.thereisnoluck.com/plugins_iblTools.php