How to make multiple exposures in-camera
01 Get set up
Use a tripod to keep the camera in the same position for all your shots. A remote release is advisable too, because otherwise there’s a risk you’ll jog the camera slightly each time you press the shutter release to take a picture. Even a small shift in position will affect the results.
02 Camera settings
Set the image quality to raw and the ISO to the camera’s minimum, then switch to aperture-priority (A) mode so that you have control over the lens aperture. Choose the smallest aperture available. This will make the shutter speed as slow as possible, improving the blur effect.
03 Image overlay
Quickly shoot ten pictures, then open the Retouch menu and select Image overlay. Choose an ‘Image 1’ and ‘Image 2’ that you want to merge from the shots on your memory card. You’ll also need to make exposure adjustments in the next step – see ‘Adjusting exposure’, below, for more.
04 Merging your shots
The Image overlay option can only merge two shots at a time. Once you’ve saved the first ‘merged’ shot, you need to open the Image overlay option again and select this as ‘Image 1’ and pick another picture from your sequence as ‘Image 2’. Repeat this until you’ve merged all ten pictures.
05 Multi-exposure mode
The Image overlay approach is a little long-winded. On our D300s there’s a better way to get the same effect – the Multiple exposure option on the Shooting menu. On consumer DSLRs you can only combine three images, but on the pro models you can combine up to ten.
06 Continuous shooting
Now we can set the camera to continuous shooting mode and fire off all ten frames in a single sequence – when it’s in Multiple exposure mode, the camera will stop when it’s taken the right number. In just a few moments, the camera merges all ten images into a single raw file.
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