Tonight I played with a macro lens, an off-camera strobe, and a candle. Light the candle, wait two minutes, blow it out, take two photos, and repeat as needed.
I took a lot of shots, but this one was my favorite. I’d like to do this again, as I don’t feel like I got the final shot I was hoping for. Still, it’s pretty good, and I’m happy with the results.
Camera/lighting information: Nikon D90 w/Nikkor 105mm micro at f/20. SB900 flash image left, about one foot from the smoke. I took the photo just after blowing a candle out.