HDRIs of various landscapes such as mountains, deserts, and forests.
A vast grassy field surrounded by a well-lit treeline. Summer 19:00.
Camera background photos and color-graded JPG panorama: https://photos.app.goo.gl/6PiAbpnZQJ3rpaHe8
Sun is unclipped, so in Cycles, you don't need any light source, other than this HDRI for very realistic shadows.
Methodology: 7 expositions with 2EV spacing + 10 expositions of the only sun with ND4096 (12 stop) filter.