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  Canon telephoto zoom lenses
 
 

Zoom lenses with a focal range above 50mm are known as telephoto zooms. Like telephoto prime lenses with fixed focal lengths, these fit less in, and are therefore ideal for getting closer to distant subjects or picking out detail; they also give a more flattering effect when taking photos of people. In contrast to wide-angle, lenses with longer focal lengths have an inherently smaller depth-of-field, which means it’s easier to get a blurred background effect – again ideal for portrait, wildlife and sports photography.

Good focal lengths for portraits are typically between 85mm and 135mm – these are often known as short telephotos. Appropriate focal lengths for sports or wildlife are generally much longer – at least 200mm, and ideally 300mm or more. Professional sports and wildlife photographers often use 600mm lenses, or even longer still. These are known as super-telephotos.

The most popular telephoto zoom range is 70-300mm, which covers portrait work while getting reasonably close to distant subjects. Depending on your preferences, you may prefer a longer range, or sacrifice the range for a brighter aperture. As before, 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.

 

As focal lengths increase, the risk of camera-shake becomes greater, so telephoto zooms with image stabilisation are preferred. Canon refers to these models with the letters IS and these can let you handhold shots with shutter speeds three to four times slower than normal. Note these won’t stop a moving subject from blurring though, which brings many enthusiasts back to large aperture models.

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, which effectively multiply lens focal lengths by 1.6 times. So if you go for a typical 70-300mm lens, you’ll actually have an equivalent of 105-480mm.

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 70-300mm f/4.5-5.6 DO IS USM
     
Focal length: 70-300mm
Aperture: f4.5-5.6
Lens mount: Canon EF
Equiv on EF-S DSLR: 112-480mm
Full-frame compatible: Yes
Anti-shake: Yes
AF motor: USM
  Closest focus: 140cm
Filter thread: 58mm
Lens hood: Optional ET-65B
Construction: 18 el. / 12 groups
Diaphragm blades: 6
Weight: 720g
Size (diam x length): 82x100mm

 
Canon EF 75-300 f/4-5.6 III

     
Focal length: 75-300mm
Aperture: f4.5-5.6
Lens mount: Canon EF
Equiv on EF-S DSLR: 120-480mm
Full-frame compatible: Yes
Anti-shake: No
AF motor: Micro Motor
  Closest focus: 150cm
Filter thread: 58mm
Lens hood: Optional ET-60
Construction: 13 el. / 9 groups
Diaphragm blades: 7
Weight: 480g
Size (diam x length): 71x122mm


 
Canon EF 75-300 f/4-5.6 III USM

     
Focal length: 75-300mm
Aperture: f4-5.6
Lens mount: Canon EF
Equiv on EF-S DSLR: 120-480mm
Full-frame compatible: Yes
Anti-shake: No
AF motor: USM
  Closest focus: 150cm
Filter thread: 58mm
Lens hood: Optional ET-60
Construction: 13 el. / 9 groups
Diaphragm blades: 7
Weight: 480g
Size (diam x length): 71x122mm


Canon EF 90-300mm f/4.5-5.6

   
Focal length: 90-300mm
Aperture: f4.5-5.6
Lens mount: Canon EF
Equiv on EF-S DSLR: 144-480mm
Full-frame compatible: Yes
  Anti-shake: No
AF motor: Micro Motor
Closest focus: 150cm
Filter thread: 58mm
Lens hood: Optional ET-60
  Construction: 13 el. / 9 groups
Diaphragm blades: 7
Weight: 420g
Size (diam x length): 71x115mm



Canon EF 90-300mm f/4.5-5.6 USM

   
Focal length: 90-300mm
Aperture: f4.5-5.6
Lens mount: Canon EF
Equiv on EF-S DSLR: 144-480mm
Full-frame compatible: Yes
  Anti-shake: No
AF motor: USM
Closest focus: 150cm
Filter thread: 58mm
Lens hood: Optional ET-60
  Construction: 13 el. / 9 groups
Diaphragm blades: 7
Weight: 420g
Size (diam x length): 71x115mm



 
Canon EF 100-300mm f/4.5-5.6 USM

     
Focal length: 100-300mm
Aperture: f4-5.6
Lens mount: Canon EF
Equiv on EF-S DSLR: 160- 480mm
Full-frame compatible: No
Anti-shake: No
AF motor: USM
  Closest focus: 150cm
Filter thread: 58mm
Lens hood: Optional ET-65II
Construction: 13 el. / 10 groups
Diaphragm blades: 8
Weight: 540g
Size (diam x length): 73x122mm


 
Canon EF 100-400mm f/4.5-5.6L IS USM

     
Focal length: 100-400mm
Aperture: f4.5-5.6
Lens mount: Canon EF
Equiv on EF-S DSLR: 160-640mm
Full-frame compatible: Yes
Anti-shake: Yes
AF motor: USM
  Closest focus: 180cm
Filter thread: 77mm
Lens hood: ET-83C included
Construction: 17 el. / 14 groups
Diaphragm blades: 8
Weight: 1380g
Size (diam x length): 92x189mm

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