I think this is fairly well done. I'd try to crop out the vignetting or see if I could correct it out, but that's just my taste. The overall exposure may be about half a stop under.
Larry Johnson wrote in post #17406957
From what I understand and have read, bracketing is just the camera taking a extra photos at different exposures based on your initial setting. One photo at a "higher" exposure and one photo at a "lower" exposure from the original. The photos aren't spliced together or overlaid, they are individual photos and you select the best exposed. I don't know enough about HDR to know if bracketing is used to create HDR. I tried bracketting when I was learning to meter and use manual exposure. It didn't really help me much.
The camera creates individual photos and, within software, you "splice" together the best exposed portions of each photo. Basically, you would import as layers > align layers > layer mask or run an automated merge function.