I use both HDR and manual exposure settings, but always in 4K. Yea, I post in 1080p but shoot in 4K.
So, what's the difference?
Basically, HDR takes 2 photos at 2 different exposures, then analyzes them. In the bright spots it uses data from the lower exposure to pull out the detail. In dark areas, it uses data from the higher exposure to get the detail. Very nice for general use. You want to be a bit careful since it analyses the exposure for each frame. The exposure can change significantly if you move from the dark ground to bright sky in one shot. Sometimes you'll want to use a manual exposure setting for this kind of shot.
Manual Settings are entirely up to you. You can adjust or screw up the exposure according to your artistic traits and believe me, I've done both. When photographing sunsets and clouds, for instance, I'll commonly use manual settings and set it a little darker than "auto" would. This makes for more drama, at least in my mind.
Of course, since the
Air 2 does not shoot time laps in HDR, I have to use manual for that.
So HDR verses 1080? What are you talking about? They are two different things.