How useful is a high-power zoom lens? Very useful if it means you don't have to switch lenses and carry an extra lens around. The following table shows how much more powerful the Nikon 18-200mm 1:3.5-5.6 G is over the Nikon 28-80mm 1:3.3-5.6 G.
| D50 28-80mm | D90 18-200mm | |
|---|---|---|
| Wide |  28mm |  18mm |
| Tele |  80mm |  200mm |
Within each column, the only variable is the movement of the zoom ring on the lens. Within each row, I changed out the lens and the camera body, so exposure details may vary. Both cameras were on point-and-shoot mode, since this is merely an illustration of the field of view.
