Anyone have any thoughts on the Lytro camera? The summary is basically that it records an image that can be focused after the fact.

Useful, or just a gimmick?

It seems to me that while this camera might be … underpowered … the idea is great. If you could combine the technology with higher-quality image recording and not have to worry about focus when taking a picture, that would provide more opportunities for a photographer to capture the image he wanted, especially in quick-response photography.