There is no upgrade path in the Pentax K system, it is crystal clear!For any K-5 user, I don't see any compelling reason to "upgrade" to the K-5II. Frankly, the K-5II simply doesn't deserve its name for being the second generation of the original K-5 after two years (but with little and insignificant improvements)!There is simply no higher ranked and better body. There is no new serious lens
