Almost no light...

In some extreme conditions when we are in very low light, we might have only option one shot HDR. If the correct exposure goes over 10 sec there won't be option to bracket +-2EV. We work on lowest ISO for lowest noise and record a RAW file.

I had such case when I was shooting entrance to Planinska cave. Only dim light came from entrance behind the corner. I took one 30sec exposure at ISO200 with Nikon D700 camera and in Lightroom I made 3 exposures. There was so dark in cave that I didn't see anything with my eyes and I had great troubles with focus.

This is the cave shot that came out.

All in Passion for HDR!  
Greetings from Slovenia!  
Samo Trebižan 

 

What about HDR and people?

Well unless you have very defined creative purpose do not HDR people. The effect is definitely not pleasing and mostly people will look like sweep or miner! the skin will look like they haven't washed their face for weeks and so if your purpose isn't to make some wild photo of a wild person, do not use HDR on people. 

I use HDR only on body painted people or in some cases on masked people!

All in Passion for HDR!
Greetings from Slovenia!
Samo Trebižan