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  Sony Alpha 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. Sony's Alpha DSLRs feature built-in anti-shake systems which allow you to handhold shots at slower than normal shutter speeds, but remember these won’t stop a moving subject from blurring, 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. Sony’s APS-C models like the Alpha A200, A300, A350 and A700 have a reduction factor of 1.5x, which effectively multiply focal lengths by 1.5 times. So if you go for a typical 70-300mm lens, you’ll actually have an equivalent of 105-450mm. Full-frame bodies like the A900 have no field-reduction factor, so a 70-300mm lens will deliver 70-300mm coverage.

Note: Sony's DT lenses are not corrected for use 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.



   
SAL-55200-2 DT 55-200mm f/4-5.6 SAM

     
Focal length: 55-200mm
Aperture: f4-5.6
Lens mount: A-mount
Equiv on APS-C DSLR: 83-300mm
Full-frame compatible: No
Anti-shake: No
AF motor: SAM
  Closest focus: 95cm
Filter thread: 55mm
Lens hood: ALC-SH102
Construction: 13 el. / 9 groups
Diaphragm blades: 9
Weight: 305g
Size (diam x length): 72x85mm



   
SAL55200 DT 55-200mm f/4-5.6

     
Focal length: 55-200mm
Aperture: f4-5.6
Lens mount: A-mount
Equiv on APS-C DSLR: 83-300mm
Full-frame compatible: No
Anti-shake: No
AF motor: requires AF motor in DSLR
  Closest focus: 95cm
Filter thread: 55mm
Lens hood: ALC-SH102
Construction: 13 el. / 9 groups
Diaphragm blades: 9
Weight: 295g
Size (diam x length): 72x85mm

   
SAL70200G 70-200mm f/2.8 G SSM

     
Focal length: 70-200mm
Aperture: f2.8
Lens mount: A-mount
Equiv on APS-C DSLR: 105-300mm
Full-frame compatible: Yes
Anti-shake: No
AF motor: SSM
  Closest focus: 120cm
Filter thread: 77mm
Lens hood: ALC-SH0010
Construction: 19 el. / 16 groups
Diaphragm blades: 9
Weight: 1340g
Size (diam x length): 87x197mm

   
SAL70300G 70-300mm f/4.5-5.6 G SSM

     
Focal length: 70-300mm
Aperture: f4.5-5.6
Lens mount: A-mount
Equiv on APS-C DSLR: 105-450mm
Full-frame compatible: Yes
Anti-shake: No
AF motor: SSM
  Closest focus: 120cm
Filter thread: 62mm
Lens hood: ALC-SH103
Construction: 16 el. / 11 groups
Diaphragm blades: 9
Weight: 760g
Size (diam x length): 83x136mm

   
SAL70400G 70-400mm f/4-5.6 G SSM

     
Focal length: 70-400mm
Aperture: f4-5.6
Lens mount: A-mount
Equiv on APS-C DSLR: 105-600mm
Full-frame compatible: Yes
Anti-shake: No
AF motor: SSM
  Closest focus: 150cm
Filter thread: 77mm
Lens hood: ALC-SH107
Construction: 18 el. / 12 groups
Diaphragm blades: 9
Weight: 1490g
Size (diam x length): 95x196mm

   
SAL75300 75-300mm f/4.5-5.6

     
Focal length: 75-300mm
Aperture: f4.5-5.6
Lens mount: A-mount
Equiv on APS-C DSLR: 113-450mm
Full-frame compatible: Yes
Anti-shake: No
AF motor: requires AF motor in DSLR
  Closest focus: 150cm
Filter thread: 55mm
Lens hood: ALC-SH0007
Construction: 13 el. / 10 groups
Diaphragm blades: 7
Weight: 460g
Size (diam x length): 71x122mm

 



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