Viz-People releases six free spherical skies
Viz-People has released a pack of six free 360-degree spherical sky backgrounds. The images are available in JPEG format at 20,000 x 10,000 resolution, and are licensed for use in commercial projects.
You can also download a range of other free assets, including cutout people and 3D models, via the link below.
Download the Viz-People spherical skies (Registration required)