| It is true that all lenses basically have but one | | | | If you enjoy wildlife photography you will, no |
| function — to let light into your camera and | | | | doubt, want a telephoto lens. 70mm-300mm, |
| focus it to make a sharp image on the sensor (or | | | | 100mm-400mm and others, are available. There |
| film) - but do not overlook the importance of | | | | are also 1.4x and 2x tele-extenders you can |
| choosing the right lens for the photography that | | | | attach to the end of your telephoto lens that will |
| YOU are interested in. | | | | turn your 400mm lens into a 560mm or 800mm |
| Are you into landscape photography? If so, the | | | | lens. If you are shooting digital, it gets even |
| wide-angle lens - typically 18mm-35mm - may be | | | | better! If your telephoto extends to 400mm and |
| what you need. The 20mm is also quite popular | | | | your camera ratio is 1.6+- you are actually at |
| for shooting landscapes (as well as working in tight | | | | c.640mm - and adding a 1.4x tele-extender takes |
| quarters indoors, whether shooting architecture or | | | | this to a whopping c.896mm! Now if you have this |
| groups of people. A 20mm f/2.8, for example, is | | | | same lens and screw a 2x tele-extender on the |
| great for shooting in low light and is quite a fast | | | | end you are at c.1280mm! |
| lens. | | | | |