I bought the Nikkor 18-70mm AF-S DX f/3.5-4.5G IF-ED with the Nikon D70 kit (much cheaper than buying it separately). Although the F stop isn't that high, the performance has been very good. Here are some examples. Here's what the manufacturer had to say: "Every Nikon SLR DX format image sensor incorporates individual micro-optics on each of the sensors pixels. Micro Optics construction ensures that the image from the camera's lens will be precisely aligned with each pixel's sensor and that performance will be optimized Its compact 3.8X zoom covers portrait to wide view (76 at 18mm to 22 50' at 70mm). Its optimized DX lens design is compatible with every Nikon D-Series digital SLR cameras . Additionally it features the following: three Nikon ED glass elements, plus aspheric element for low distortion and minimized chromatic aberration; Exclusive Silent Wave Motor for high-speed auto-focusing with accuracy and super-quiet operation; Internal Focusing (IF) for smoother operation and great balance; M/A mode for instant switching from auto-focus to manual Nikon D-Signal technology for enhanced flash and ambient exposure control."

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