I think there is a line between photography and art.
Taking a pictures at your child's birthday party is photography. Sure, you want to capture the moment and try to make sure that there is decent exposure so that your shots look okay. Taking that same camera and using perspective and interpretation is where photography becomes art. Maybe your child is taking a silent break by themselves, away from the party and you were able to capture a glimpse of silent reflection or even exhaustion in their expression.
HDR is no different. Any time creativity is injected into a scene, a simple photograph becomes art.
I have to disagree. Why can't that picture of the birthday party be art? This has been the real question for a while. There are plenty of people who see Andy Warhol's Campbell's soup cans and think, "That's not art, he just copied a can perfectly!" Other's think it's beautiful art. I don't think it's as easy as to say "If you shoot this like this, it's art, but if you shoot that like that, it's not."
Why do people think that art requires pre-planning, a lot of thought, personal reflection, "perspective and interpretation" or any number of things. Why can't art just be something that is created because the artist wanted to create it?
It's funny because if a newbie posts a picture of a blurry scene in downtown New York, most people would say it's not art, and that it needs to be in focus, and <insert more technical "improvements" to the image>. Yet, would you think
this photo is art? I mean, the lady is very blurry, it's not in great focus, and the composition could probably use some work and the background is very busy.
You really cannot define what art is, where it begins and end, or anything like that. If you start to define what exactly art is, it ceases to be art.