• You can use a Canon Digital SLR (single lens reflex) camera body with a variety of different lenses. If you're a beginner, start with just one lens, such as a standard zoom, and then expand into other lenses depending on your interests. Canon offers a wide variety of fixed focal length and zoom lenses at both entry level and professional level.
  
  

Ultra-Wide Zoom

• Ultra-wide zoom lenses have a wider perspective than standard or telephoto lenses, allowing you to include more of your subject in a photograph. These lenses are particularly good for landscape, cityscape and interior photography. The short focal length also allows for greater depth of field, meaning more of your image will appear in focus. Canon offers ultra-wide zoom lenses with ranges of 16 to 35 mm, 10 to 22 mm, and 17 to 40 mm. In late 2009, prices range from $800 to $1,600.
  
  

Wide Angle

• These lenses have fixed focal lengths that are slightly longer than the ultra-wide angle zoom lenses. You can choose between wide-angle lenses with fixed focal lengths at 14 mm, 15 mm, 20 mm, 24 mm, 28 mm and 35 mm. Canon also offers a Fisheye wide angle lens. In late 2009, prices range from $300 to $2,400.
  
  

Standard Zoom

• Standard zoom lenses are perfect for beginner photographers or photographers who will be shooting while traveling or attending crowded events. Canon offers standard zoom lenses with a variety of ranges, some wide enough to act as both wide angle and telephoto lenses. You can choose between lenses with ranges of 15 to 85 mm, 17 to 55 mm, 18 to 55 mm, 18 to 135 mm, 18 to 200 mm, 24 to 70 mm, 24 to 105 mm, and 28 to 135 mm. In late 2009, prices range from $200 to $1,500. This variety of zoom ranges and prices should be able to accommodate the different interests of photographers at a variety of levels.
  
  

Telephoto Zoom

• Telephoto lenses have extremely long focal lengths, allowing you to get closer to your subject. This long focal length also reduces the depth of field you can get using the lens. This means that the foreground and background of a picture taken with a telephoto lens will often be out of focus. Telephoto lenses have much narrower perspectives than the human eye or other lenses, meaning you will be more limited in terms of what you can include in your picture. Telephoto lenses are perfect for sports, nature and wildlife photography. Canon offers a variety of entry-level and professional telephoto lenses, with zoom ranges including 55 to 250 mm, 70 to 200 mm, 70 to 300 mm, 75 to 300 mm, 100 to 300 mm, 100 to 400 mm, and 28 to 300 mm. As of late 2009, prices range from $200 to $2,700.
  
  

Fixed Focal Length Standard, Telephoto, and Super Telephoto

• Canon offers standard and medium telephoto lenses with fixed focal lengths of 50 mm, 85 mm and 100 mm. Prices range from $100 to $2,200. You can also choose between telephoto lenses with fixed focal lengths of 135 mm, 200 mm and 300 mm, or super telephoto lenses with fixed focal lengths of 300 mm, 400 mm, 500 mm, 600 mm and 800 mm. As of late 2009, prices range from $1,400 to $12,000.
  
  

Macro

• Macro lenses are designed for photographing minute details on subjects such as flowers or insects. Canon offers macro lenses with fixed focal lengths of 50 mm, 60 mm, 65 mm, 100 mm and 180 mm. As of late 2009, prices range from $300 to $1,600.
  
  

Tilt-Shift

• Tilt-Shift lenses allow you to perform tilts and shifts with your digital camera the same way you would with a large format camera. You can use these movements to achieve greater depth of field at maximum aperture or to compensate for distortion when photographing tall buildings. Canon's Tilt Shift lenses have fixed focal lengths of 17 mm, 24 mm, 45 mm and 90 mm. As of late 2009, prices range from $1,300 to $2,500.