For anyone else confused…
(I’ve heard of HDR and i know of the DJI drone company, but wasn’t familiar with the other acronyms)
AEB: Auto Exposure Bracketing - When set to three bracketed exposures (the default setting), the first image is taken at the correct exposure value (as calculated by the camera), the next is underexposed, while the third is overexposed.
DNG: Digital Negative file - raw image format used in digital photography