Stock HDRI and backplate vendor Panocapture is offering three hi-res spherical HDR files and 23 matching backplates, all licensed for commercial use, to anyone registering for its newsletter.
Download free spherical HDRIs from Panocapture
Each panorama in the City Dusk pack is provided at 16,000 x 8,000-pixel resolution in .hdr format, and was shot with a 12 exposure range. The backplate images are at 6,016 × 4,016-pixel resolution.
The images show cityscapes at different stages of twilight.
Panocapture also sells a range of commercial HDRIs, including urban, rural and interior environments.
Register for the Panocapture newsletter
(Should generate an automatic reply including download instructions for the free HDRIs)