Some have suggested this is a native behavior with IPS displays. I did a side-by-side of the same image with a Transformer Prime and Trasformer Pad 300 - both of which have IPS displays. The ghosting simply didn't happen, at least not to a point where I could see it. This may be an issue with the IPS panel in the Nexus 7, or it could be a software problem, but it's by no means the same in every Android tablet with an IPS display out there.
Additionally, the ghosting you're seeing here is obviously with an example that easily shows up on a camera - it happens in other situations, but it's more difficult to capture.