This app was removed from the App Store.
Mac OS Photography
Lightfield Viewer lets you examine lightfield images taken with plenoptic cameras.
It automatically computes initial parameters (microlens offset and stride) as a starting-point for tweaking the individual image. As it utilizes the processing power of the GPU by using a highly optimized OpenCL-based rendering-path, results of parameter-changes can be seen in real-time. Final images can be saved in the PNG-format.