Nikon D7200 For Dummies
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You can achieve multi-image exposures on your Nikon D7200 through the Photo Shooting menu or Retouch menu. Two camera features combine multiple photographs into one:

  • Multiple Exposure (Photo Shooting menu): With this option, you can combine your next two to three shots. After you enable the option and take your shots, the camera merges them into one file. The shots used to create the composite aren't recorded and saved separately. The Multiple Exposure option isn't available in Live View mode.

  • Image Overlay (Retouch menu): This option, available only through the regular Retouch menu (and not the Playback version of the i button menu), enables you to merge two existing Raw images to create a third Raw image. This option was used to combine a photo of a werewolf friend, shown on the left, with a nighttime garden scene, shown in the center. The result is the ghostly image shown on the right. Oooh, scary!

    Image Overlay merges two Raw (NEF) photos into one.
    Image Overlay merges two Raw (NEF) photos into one.

On the surface, both options sound cool. The problem is that you can't control the opacity or positioning of the images in the combined photo. For example, the overlay picture would have been more successful if the werewolf was moved to the left in the combined image so that he and the lantern aren't blended. And if the background of image 2 is kept at full opacity in the overlay image rather than getting a 50/50 mix of that background and the one in image 1, which creates a fuzzy-looking background.

However, there is one useful effect that you can create with either option: a "two views" composite like the one shown here. For this image, Image Overlay is used to combine the front and rear views of the antique match striker into the composite scene.

If you want each subject to appear solid, use a black background and position the subjects so that
If you want each subject to appear solid, use a black background and position the subjects so that they don't overlap.

For this trick to work, the background in both images must be the same solid color (black seems to be best), and you must compose each photo so that the subjects don't overlap in the combined image, as shown here.

Don't use Image Overlay or Multiple Exposure for serious photo compositing. Instead, do this work in your photo-editing software, where you have more control over the blend. The camera manual offers details on both options.

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Julie Adair King's history as a digital photography author dates back to 1997 with the publication of the first edition of Digital Photography For Dummies. Since then she has authored over 50 books on digital photography, cameras, and photo editing and design software. She also teaches workshops at various locations including the Palm Beach Photographic Centre.

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