I got swamped on Thursday and didn't post anything. Sorry 'bout that. I got caught up this morning and thought I'd have a little fun in Photoshop. I shot a few photos of the models at the Westcott Lighting booth, during Photoshop World. Mark talked about that a couple weeks ago. This lady, and her boyfriend model in steampunk attire, were probably the most interesting. I drooled over the cool lighting gear in the booth and moved on, not really thinking about what I would do with the photo.
I was browsing through Matt Kloskowski's book, Photoshop Compositing Secrets, and it looked pretty interesting. He shows you many examples of his work and goes through the process extensively. I highly recommend Matt's book. With a little time on my hands, today, I figured I'd give it a try. I started by extracting the model from the background.
Since I don't usually do this kind of stuff, my stock of background images is pretty small. I settled on this door from a photowalk in Harper's Ferry.
Matt keeps his eyes open during his travels for backgrounds that he can use later. Guess I'll need to keep that in mind for later efforts. For best results, you should also use the same lens and perspective in all your composite photos. I violated this rule completely - not only were my lenses unmatched, my photos are from two different cameras. When I combined the photos, I immediately noticed the difference. I put in some noise in the model photo to get closer to the look of the background photo. I also needed to adjust the color balance to get everything similar.
In the end, I'm not sure I got it completely right. The model still looks like she needs some more work to fit perfectly into the background. You should give compositing a try. It's good practice for lots of photoshop techniques and can give you the a chance to create something that wasn't there when you made the original photographs.