HDR is a post processing technique, while bracketing is the shooting technique that makes it possible. ... While HDR is an incredible technique for high contrast scenes, it's also easy to overdo.
Is photo stacking the same as HDR?
While HDR merges photos taken at several different exposures together, focus stacking merges images taken either with different focal points, or sometimes with different aperture values.
What is bracketing used for?
Bracketing means creating several photos with different settings between the brackets. Exposure bracketing is when a photographer creates pictures with different exposure settings. The purpose of this is to cover more of the dynamic range. Bracketed photos are used later to create an HDR (high dynamic range) photo.