Isn't there a setting on some cameras...maybe called "bracketing", or something, that takes a shot in the -2, 0, and +2 stops for you? Or something like that, then you can do what you need in the post? I found the bracketing or whatever on my camera just not sure what to do with it...or how to use it.
Yeah here I found something on it...in respect to my camera, I'm sure a lot of cameras have this...
QUOTE
If you do HDR work, you'll probably find the 5D Mark II's bracketing implementation a mixed bag. It's incredibly flexible compared with most--in some respects. For instance, you can bracket in any increments of 1/3, 2/3, 1, 1 1/3, 1 2/3, or 2 full stops, centered around any EV up to +/- 4 stops. Unfortunately, it limits you to three exposures where other cameras let you do five or seven. Argh.