  We have worked out the details of a single camera, single exposure method to
perform three-dimensional imaging of a finite particle cluster. The procedure
is based on the plenoptic imaging principle and utilizes a commercial Lytro
light field still camera. We demonstrate the capabilities of our technique on a
single layer particle cluster in a dusty plasma, where the camera is aligned
inclined at a small angle to the particle layer. The reconstruction of the
third coordinate (depth) is found to be accurate and even shadowing particles
can be identified.
