Quote - You have some URLs for panaramics listed on your EnvSphere pages but still I want to ask here... what are the easiest pages for getting hold of panaramics to use with your GemIBL?

Thank you for sharing these tools!

There is a very active and growing community of folks at flickr.com making equirectangular images. The search was listed in my EnvSphere links page. As I'm writing this, there are 7,982 such images on flickr. Is that not enough? LOL

Many of them are governed by Creative Commons licenses. I found almot 1900 such images that can be used free for non-commercial derivative works, as long as you give credit to the original photo author. Still, if you're going to post using one of them, I'd just email the author. Most of them are in it for the fun, and would enjoy knowing you found their work useful. (Same as me)

Use flickr's advanced search. Scroll to the bottom. You can then filter by license type.

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)