Create Great iPhone Photos

Double Exposures

In the age of Photoshop, the genuine double exposure is a relic. Pre-Photoshop, a photographer would expose two images on the same frame of film (or photographic paper) in order to achieve a double exposure. That’s no longer necessary; you can simply create a new layer in Photoshop (or another desktop image editor) to superimpose one image over another. But for a blast from the photographic past, open Night Camera (Sudobility; $0.99), select its Settings icon, and then choose Double Exposure mode (see Figure 4-40). After you take your first image, that image will appear as a transparent overlay when you snap the second image. You ...