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  Canon wide-angle zoom lenses
 
 

Zoom lenses with a focal range below 50mm are known as wide-angle zooms. Like wide angle prime lenses with fixed focal lengths, these capture bigger views than normal lenses, which is useful whether you’re trying to photograph a large building from inside or out, a sweeping landscape view, or even just a big group shot. They’re invaluable when you can’t step back any further.

By squeezing more into your photos, wide angle zooms inevitably have greater distortion, especially towards the edges. This may not be noticeable on natural landscapes, but can appear unflattering on portrait shots unless the person (or people) are placed in the middle of the frame. That said, this effect can also produce pleasing results and be used to exaggerate perspective – a popular wide angle technique is to get very close to a foreground subject so it appears large compared to the background. Wide angle zooms also have large depths of field, which means it’s easier to get lots in sharp focus from close-up to far away.

 
 

28mm is the most common wide angle focal length and can produce quite natural-looking results. Focal lengths above this approach a more standard view, while shorter focal lengths produce wider results. A wide-angle zoom will generally cover a variety of focal lengths from modest wide to ultra wide, giving you greater flexibility than a fixed focal length prime lens – a typical range could be 16-35mm.

As always, bear in mind any reduction in field due to your DSLRs sensor when choosing a lens. Canon’s APS-C models like the EOS 400D / XTi and 40D have a reduction factor of 1.6x. So if you’d like coverage equivalent to 16-35mm, you’ll need to fit them with an 10-22mm lens.

Lenses with smaller f-numbers gather more light thanks to their bigger apertures, which makes them better in dim conditions and for minimising the depth-of-field. Bigger apertures however mean a larger, heavier and more expensive lens.

Note: Canon’s EF-S lenses are not compatible with full-frame DSLRs. For a full explanation of lens specifications and examples of coverage at different focal lengths, check out our Camera Labs Lens Buyers Guide.



   
Canon EF-S 10-22mm f/3.5-4.5 USM

     
Focal length: 10-22mm
Aperture: f3.5-4.5
Lens mount: Canon EF-S
Equiv on EF-S DSLR: 16-35mm
Full-frame compatible: No
Anti-shake: No
AF motor: USM
  Closest focus: 24cm
Filter thread: 77mm
Lens hood: Optional EW-83E
Construction: 13 el. / 10 groups
Diaphragm blades: 6
Weight: 385g
Size (diam x length): 84x90mm


 
Canon EF 16-35mm f/2.8L II USM

     
Focal length: 16-35mm
Aperture: f2.8
Lens mount: Canon EF
Equiv on EF-S DSLR: 26-56mm
Full-frame compatible: Yes
Anti-shake: No
AF motor: USM
  Closest focus: 28cm
Filter thread: 82mm
Lens hood: EW-88
Construction: 16 el. / 12 groups
Diaphragm blades: 7
Weight: 635g
Size (diam x length): 89x112mm



Canon EF 24mm f/1.4L II USM Canon EF 16-35mm f/2.8L USM

   
Focal length: 16-35mm
Aperture: f2.8
Lens mount: Canon EF
Equiv on EF-S DSLR: 26-56mm
Full-frame compatible: Yes
  Anti-shake: No
AF motor: USM
Closest focus: 28cm
Filter thread: 77mm
Lens hood: EW-83E
  Construction: 14 el. / 10 groups
Diaphragm blades: 7
Weight: 600g
Size (diam x length): 84x103mm



 
Canon EF 17-40mm f/4L USM

Canon EF 17-40mm f/4L USM_1

Canon EF 17-40mm f/4L USM_2 Canon EF 17-40mm f/4L USM_3
     
Focal length: 17-40mm
Aperture: f4
Lens mount: Canon EF
Equiv on EF-S DSLR: 27-64mm
Full-frame compatible: Yes
Anti-shake: No
AF motor: USM
  Closest focus: 28cm
Filter thread: 77mm
Lens hood: EW-83E
Construction: 12 el. / 9 groups
Diaphragm blades: 7
Weight: 500g
Size (diam x length): 84x97mm


Canon EF 20-35mm f/3.5-4.5 USM Canon EF 20-35mm f/3.5-4.5 USM

   
Focal length: 20-35mm
Aperture: f3.5-4.5
Lens mount: Canon EF
Equiv on EF-S DSLR: 32- 56mm
Full-frame compatible: Yes
  Anti-shake: No
AF motor: USM
Closest focus: 34cm
Filter thread: 77mm
Lens hood: Optional EW-83II
  Construction: 12 el. / 11 groups
Diaphragm blades: 5
Weight: 340g
Size (diam x length): 84x69mm



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