I have a D700 which I'm not planning to replace at this point in Nikon's product cycle. I'll porbably buy the D800's successor. Not because I don't like the D800 (especially its usability improvements around focus mode switching and Live View, which don't seem to have attracted much attention) but because I can't justify the cost when there are too few things the D800 does that the D700 doesn't.
Anyway, although I'm keeping the D700 for now, I'm planning to buy a wide-angle prime so that I end up with this in my bag: D700, SB-800, 105mm micro, 50mm, wide-angle.
I need to choose a wide-angle lens. The 14-24 is a great lens, but too big for me to routinely carry it. So I'm going to buy a wide-angle prime. However, I don't want to buy a prime now that turns out to be disappointing on the replacement body I eventually buy.
As for focal length, the 35mm is a lens I could like but it's too close to the 50mm for me to seriously consider buying it. Hence I'm looking at the 20mm - 28mm focal length range. Which Nikon primes have sufficient micro-contrast to work well with bodies with a finer pixel pitch at full frame (I'm going to assume for the sake of the discussion that that is what the D800 successor will be like: FX, high resolution)?
I'm going to assume that the 24mm f/1.4 is going to be among the suggestions, and in fact Nikon points it out in the technical guide for the D800 as being suitable for use with the D800E. It's heavy and expensive so I worry that in practice I'd leave it behind with the 14-24. So I'm interested in my other likely options.
Budget is important for recommending the right choice. But I'm pretty flexible for a reason: new lenses will be launched between now and the launch of the D800's successor. So maybe the right approach is to buy something less expensive now and upgrade later to some not-yet-existing lens. The principle I'm going to operate on is that I'm OK with buying a lens now, that's actually not suitable for the D800's successor at up to €400. I'd just sell if that seems like the right thing to do, and not worry about losing some of its value on the re-sale. On the other hand, if I'm going to spend more than €500 I don't want to plan to replace the lens.
My planned uses are principally travel photography, interior shots, architecture, some environmental portraits.
What do you say?
Answer
My suggestion would be that you hold off on a wide prime if you're buying it for the future. Any of them are okay if you're looking to match them with the D700's sensor, but the D800 (and, one would assume, its successor models) has about the same pixel density on the sensor as the D7000, and the Nikkor full-frame wide angles are showing their age on that model (and not well, either). They're not particularly sharp at the corners, and display significant vignetting already -- and that doesn't account for performance at the edges of a full-frame sensor. If you can, try to get some feedback from people who've tried them on a D3X, but I wouldn't expect any rave reviews.
Since Nikon has decided to step into the miniature medium format world -- using a sensor that's verging on the very edge of even theoretically perfect lens performance -- and their stable of full-frame wide-angle primes is getting a little long in the tooth, I'd expect to see some newer design trickling in over the next few years. So buy for the short term rather than for the future if you're waiting for a successor to a model that isn't actually shipping yet -- something that might show its age on a D800 could be the best thing that ever happened to your D700. And get the focal length you need rather than worrying about which one is "best" -- the best lens is the one that lets you take the pictures you want to take, not the one with the best specs, build quality or handling.
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