Originally posted by Urkeldaedalus I'll turn that question around on you, why buy a gimped FF camera when you could buy a high-quality APS-C for a similar amount of cash? Especially if you already own good lenses that could be used on that APS-C camera.
Don't get me wrong, I have FF ready Pentax lenses and would do a few cartwheels if they came to their senses and released a FF camera that I could use them on. But I think just comparing cameras by sensor size or megapixels misses a lot.
I think a Pentax FF would be bad, very bad indeed, for Pentax forums such as this one...
IMHO it is the "I want a FF" threads that keep them busy...
Anyway, there is more to it than sensor size. It is what they allow you to do with it, rather than what you could do with it...
Will the D600 be "allowed"to "compete" with higher end models? No way. If so nobody would upgrade from that. D600 is probably designed as an entry level FF. It is made to make you lust for more. Maybe simply less features, less advanced processing. Maybe even a downgraded FF sensor, or at least not ( being allowed to be) used to its full potential.
It is like many entry level dslr's, the often share the same sensor with higher up models, yet, after a bit of shooting you want a more capable camera. at least in some cases, many will remain at entry level because it is sufficient for them... And many of those should not have bothered with dslr because their use and knowledge.. They could just as well have stuck with a P&S.
So K-5 or K-3 may be at least as good as the FF D600.