This is a joke. For $50 it might fly. For $500 . . . go home, Sony, you're drunk.
You can take some ridiculously impressive shots with the stock iPhone Camera (and you won't even blow out your highlights), using at least the built-in HDR feature plus some quality editing apps.
Just check out, for example, what Kevin Russ is doing with just an iPhone and some apps. No big-ass lens stuck in front, either.