Excerpt: I did a "save as" on my 20/2.8 review so if you've already read that, you're going to be experiencing deja vu all over again... There isn't a whole lot to say about a fixed 24 lens. Nikon's is sharp and contrasty. All of Nikon's "very wide" lenses have "close-range correction" (CRC). This is a "floating element" that moves relative to the other pieces of glass inside the lens as you focus. Most lenses just move a whole rack of optics in and out as you focus.