 on the web there's special panoramic images which can be used to light 3d scenes and can serve as backdrops -
they are sometimes called "spherical" sometomes "equirectangular"
there's a nice collection of them at sIBL ( http://www.hdrlabs.com/sibl/archive.html )
Also see : https://sites.google.com/site/mcasualsdazscripts5/mcjskysphere Note: the sphere and ground plane used in the video titled "3d environment sphere + plane"
also note that a slightly better version of that dome will probably be posted soon
and also note that the script that was used to generate them will be posted soonishingly
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