I met up with Demelza Fox at Lammas Land this past Sunday for a photo shoot. The plan was to take some nice sunset photos, but unfortunately it was a bit overcast. Luckily Demelza had brought lots of candles, so we did some nice photos after sunset. I also played around a bit with in-camera double exposures.
Now for something in a completely different style: an in-camera double exposure. When doing these double exposures we exploit the fact that a bright sky will mask out anything that is in that region of the frame. The pixels in your sensor count the amount of photons that hit them, but there is an upper limit to how far they can count. If you reach the limit in the first exposure, the second exposure can not affect that pixel. The first shot is of the model silhouetted against the sky, the second shot is of some trees with my camera turned around so the sky is now at the bottom. This way I will mask out the lower half of the model. Now if you are unlucky it might look like she has hairy armpits, or a beard, or maybe that is the look you are going for? Afterwards in Photoshop you might want to play with the curves a bit to perfect the photo.
It is fun to photograph with a few props. If you cannot do multi exposures in camera all is not lost, you can do it in Photoshop also. Put your two photos in different layers, then change the blending mode of the upper one to screen. Doing it this way has the benefit that you can fine-tune your composition.