Nikon 180mm f/2.8D ED-IF AF Nikkor review at SLR Gear

Nikon 180mm f/2.8D ED-IF AF Nikkor review at SLR Gear

"This lens is another great example of why I'm coming to like primes so much. Besides the fact that they're easier to write about ;-) they just deliver better image quality. This particular 180mm f/2.8 from Nikon also happens to be built like a tank. (If tanks were small and cylindrical, they'd probably look a lot like this.)

Enough fizzy hyperbole though, let's look at the details.

This lens isn't "prickly" sharp wide open, but quickly becomes so as you stop down a little. It has a broad sweet spot from about f/5.6 to f/11, but even wide open at f/2.8 it showed excellent uniformity across our D200 test body's DX sensor. Very, very nice sharpness characteristics, very well behaved.
 
Maximum CA is low to moderate, but average CA is uniformly low, indicating that most of the CA occurs in the corners, not extending too far into the image area. Maximum CA is low at large apertures, reaching a minimum at f/4, growing gradually from there to f/11, and then leveling out from there to f/22. Average CA is almost perfectly constant, regardless of aperture. Another mark of "well-behaved", this time in the CA department.
 
As is usually the case with a full-frame lens on a sub-frame camera, and particularly with longer primes, exposure uniformity is very good on the Nikkor 180mm f/2.8. Worst-case light falloff is just under 0.2 EV wide open, decreases to 0.1 EV at f/4, and then is essentially unmeasurable from f/5.6 on."
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