We explore the use of inexpensive consumer light- field camera technology forthe purpose of light-field mi- croscopy. Our experiments are based on the Lytro(first gen- eration) camera. Unfortunately, the optical systems of the Lytroand those of microscopes are not compatible, lead- ing to a loss of light-fieldinformation due to angular and spatial vignetting when directly recordingmicroscopic pic- tures. We therefore consider an adaptation of the Lytro op-tical system. We demonstrate that using the Lytro directly as an oc- ularreplacement, leads to unacceptable spatial vignetting. However, we also found asetting that allows the use of the Lytro camera in a virtual imaging mode whichprevents the information loss to a large extent. We analyze the new vir- tualimaging mode and use it in two different setups for im- plementing light-fieldmicroscopy using a Lytro camera. As a practical result, we show that the cameracan be used for low magnification work, as e.g. common in quality control,surface characterization, etc. We achieve a maximum spa- tial resolution ofabout 6.25{\mu}m, albeit at a limited SNR for the side views.
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