Originally posted by mattb123 I'd get the lens because landscape and portraits don't need the Z features that much. Sure those are great features but a lens covering a FL you can't currently cover will give more return for that investment IMO. But neither is probably a big mistake, so enjoy whatever you decide!
Well, the 645z has live view, very useful for landscapes, tilting screen that could sometimes come handy when shooting with the camera very low on the ground, and handles long exposures much better than the 645d, which to me are the biggest plusses for landscape that the Z has over the D... to me, they make it worth the upgrade alone, but of course YMMV...
In the end, I think he is bound to end happy whichever way he decides to go