Here's a fun little tool I made in order to quickly create HDRIs. It first accurately merges all the exposures for all in input images from RAW DNG files and then stitches them. It has a number of user settings allowing you to change the blending of the bracketed exposures, where the seam blends, and the rotation of the HDRI. When used with Marco Meyers mmColorTarget (https://www.nukepedia.com/gizmos/colour/mmcolortarget) you can neutralise the HDR and bring it into ACEScg for correct production use.
Updated: Jan 7, 2022