Grzegorz Wronkowski shares a pack of 300 unclipped 10K hdri frames which can be used as an HDRI timelapse or animated environment for your scenes.
“I created this hdri timelapse set using Nikon D800, Promote Controler and 10 stops ND filter attached to Sigma 8mm circular fish eye lens. For proper white balance and profile I used X-Rite Color Checker. All 300 hdri maps (32 bit .exr files) were captured every 5 seconds, but in fact because of shooting in brackets of 5 shots, and camera memory buffer it was between 5-8 seconds in reality.
All processed RAW files were exported to 16-bit tiffs (around 300GB of data in files). I have written quick Python script to find out missing frames and finally merged all flat tiffs into 32-bit .exr files in Photomatix. I used PTGui to batch transform all frames into equirectangular format.” – Grzegorz Wronkowski
Click here to download the files.