I hear good things about a few of the Sony lenses. But Nikon isn't lacking their own high quality lenses, either from Nikon itself or from third parties. There are, of course, a full range of superb Zeiss ZF lenses for the Nikon F mount. I would argue it's a much more complete line of primes than Sony has. Also, Nikon has the 14-24 and 24-70 zooms, both with curved aperture blades for pleasing bokeh. I don't think you're going to find a finer performing zoom in the 14-24 range than the Nikon. Even the Canon folks seem to appreciate the 14-24 optics :-) And I'd guess the 24-70 can hold it's own. Then of course you have the new tilt-shift lenses, which I don't think Sony has (correct me if I'm wrong on this). And the long teles - the 300, 400, 500 and 600. And the superbly flexible 200-400 zoom. I don't think the Nikon D3X will be in any way hampered by lenses of suitable quality.
I'm not knocking the A900. So far I've been favorably impressed by what I've seen from it. But it's quite a stretch to suggest that the D3X will be hampered by poor lenses.
I did not say that Nikon would be hampered by poor lenses. Though on almost every lens where there is a CZ or a minolta prime, Sony got from equal to better than Nikon. BTW, Sony also got curved blades on all lenses even the 300$ ones.
Anyway, my comment that you quoted above and some how you got out of contest, was referring to someone saying that Nikon, Canon and SIGMA?
are working on medium format digital cameras. Therefore my question "where are the lenses" for such a large sensor was made ironically.
In my view, nothing on the lens line up of the DSLR makers could be put in front of a medium format sensor today, even the smallest sized 28/31mp sensors. therefore they all need new lenses.
Sigma can barely do decent lenses for 35mm FF, Nikon is spilling out 2 or 3 lenses per year (sometime even DX lenses....), canon is maybe doing barely better. If they want to introduce such a body, they need to come out with at least 6 lenses to begin with, in order to be able to work with such a camera.
Let's be realistic, nikon took 6 year to catch up with Canon borrowing sensors from sony, and they finally came out with a 12mp sensor 5 years too late and with a 24mp sensor when everybody, a part from Nikon users, already got one 20mp+ DSLR and are yawning about the DX3. Not mentioning that medium format kits body, lens prism and digital back can be bought for 15/18.000 dollars today and leica will be out with a 37mp body in september next year and they said they will do their best to offer it at 15K. The Leica body, if anybody had the chance of playing with it, will realize it is on a league that will be very difficult to match by anybody else, they will use a Kodak MF sensor of the same class of those used on Phase and Hassy backs, and they already have at least 6 medium format lenses ready. Who think Canon , Nikon and Sigma?
really want to go there?
I mean Sigma... come on!