Nkkor 18-70mm IF-ED AF-S DX
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This is one of several "kit" lenses that have been offered with the Nikon D200 camera. It
is lightweight, optically very sharp at all zoom settings and has considerably less barrel
distortion at wide angles as compared to point-and-shoot cameras. It is definately an all-around
good working lens (until you get an 18-200mm VR lens which is even better for all-around work).
- AF-S: Auto Focus, Silent Wave
- IF-ED: Internal Focus, Extra-low dispersion element. It means that focusing is accomplished
by moving a rear lens element, not the whole entire front of the lens. Polarizers don't rotate
in other words during focusing.
- DX: Smaller image circle intended for use on Nikon DSLR's. DX lenses can be much smaller
and lighter than their full-frame counterparts. That means you get more lens for the buck, or
less bucks for a lens, depending on your constraints.