Pardon my n00bishness, but I don't get the 12-exposure thing. Why so many? Again, I am new, but couldn't a photo like this have been created with just one exposure and a lot of "brush work" in LR and PS? Or maybe blend 2 or 3 exposures and a little less work in LR/PS?
I didn't NEED 12. But I don't see how I could do it with only a few.
The idea here is that you take as many as you need and light up things as you go--sorta HDR if you will. Typically people use long exposures to literally paint the car with light from a constant light source; I chose to use multiple flash bursts. Because I don't like the reflection trails it leaves on panels.
A few exposures alone were used just for light on the wheels and tires alone. I specifically lit up the tread on each and the face of the wheel.
My PS file has about 30 layers or so on with with a few adjustment layers on each of those and then layers to clean up reflections/imperfections. All my layers are masked so each exposure might only contribute about 10% of the overall image (e.g., the hood, a wheel, the grill, etc.).
One thing that bothers me is the bright areas of the background above the car. I think there could also be a happy medium in the background exposure levels between your first and edited versions - one is a tad too much, the other too little. And the perspective on the car... a little more to the right and you could have removed any doubt what that "hump" is in back and given the viewer a more obvious tailight-is-on look. I might have also tried to add some shine, somehow, to the body side. It just looks too flat or dull.
I wasn't entirely happy with the sky in the background, didn't turn out how i'd hope. On the LCD is appeared to show better sky than I ended up getting. I might play with it.
Unsure what this "hump" you keep mentioning is.
I would like to touch up the side of the car and make the transition from the angle above the door handles to the side of the car more drastic.
This is my first attempt at anything like this in a few years since doing something similar with just a cell phone, and really my second attempt ever. I've been giving advice to others on how to do it and now I have something to actually show.
Here's an article that shows how using 45 exposures can be used to make your image look like complete and utter crap:
Chris Henderson (Light) Paints a Really Big Truck - PocketWizard Blog | Radio Triggers for Photographers