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Canon EF 70-300mm f/4.5-5.6 DO IS USM

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Canon EF 70-300mm f/4.5-5.6 DO IS USM
Canon EF 70-300mm f/4.5-5.6 DO IS USM
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  • Three-layer Diffractive Optical (DO) element
  • Up to three stops  Image Stabilizer (IS)
  • 6 blades (Circular aperture)
  • Metal mount
Canon EF 70-300mm f/4.5-5.6 DO IS USM
MTF Charts: 
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Overview

Description by Canon:

A unique design amongst telephoto zoom lenses. The EF 70-300mm f/4.5-5.6 DO IS USM incorporates a Diffractive Optical (DO) element that delivers compact size, low weight and superb image quality

  • Three-layer Diffractive Optical (DO) element
  • Just 9.99cm in length
  • Image Stabilizer
  • High speed AF with manual focus override
  • Circular diaphragm for pleasing bokeh
  • Zoom ring lock

A unique approach to telephoto zoom design.

Packed with technology
With its multi-layer Diffractive Optical (DO) element, Image Stabilization (IS) and Ultra-Sonic Motor (USM) technologies, the EF 70-300mm f/4.5-5.6 DO IS USM is a celebration of precision lens design.

Diffractive Optical (DO) optics
The EF 70-300mm f/4.5-5.6 DO IS USM incorporates a Diffractive Optical (DO) element, which reduces the physical size of the lens while preserving image quality. The DO element combines the characteristics of fluorite and UD elements into one piece of glass. The result is high contrast and sharpness as well as tight control over chromatic aberration.

Image Stabilizer
The EF 70-300mm f/4.5-5.6 DO IS USM features a three stop Image Stabilizer (IS), making this an ideal lens for handheld work. Shutter speeds up to three stops slower than normal can be used with no perceptible increase in image blur. Major movement in a particular direction is automatically interpreted as panning and IS is turned off in this plane.

 

Ultrasonic focusing
A ring-type ultrasonic motor drives autofocus extremely quickly, and in near silence. Excellent holding torque ensures the point of focus is reached accurately, without overshooting.

Pleasing background blur
A virtually circular aperture diaphragm, which is controlled electromagnetically, gives out-of-focus regions a softer, more even feel, and lets in-focus subjects stand out against a blurred background.

Integrated into the EOS system
The AF drive pattern of the lens is tailored to specifically match that of the latest EOS range, extracting maximum benefit from the lens’ speed advantage. The lens ensures optimal flash metering by passing distance information back to a compatible EOS camera's E-TTL II flash system.

In harmony with the environment
In keeping with Canon’s stringent environmental policy, only lead-free glass is used in the lens’ optics.

Reviews

"Simply put, a DO element comprises of two glass elements, which are etched on their facing surfaces with concentric lens surfaces, in a similar way to that found on a fresnel lens but with a few important alterations. The width of the concentric surfaces gets narrower towards the edges of the lens, which gives the elements aspheric properties, and promises to help control colour aberrations more effectively. It also

Post date: 13/11/2011 - 00:00

Canon introduced the Diffractive optics lens line with much fanfare sometime around 2005. Hailed initially as the next big revolution in optics, the end result did not pan out as good.This is the only zoom lens with the 'DO' mark, and maybe the last one too.

 

"Focusing is completely internal and the only indication is on the distance scale window. The Ultrasonic Motor is the ring type which is the better quality of the two types of USM motor that Canon fit as it uses a simple design of two rings, one attached to the focusing bits and the other is attached to the lens barrel. When one vibrates, it translates to the other as movement and the lens focuses. It's

Post date: 06/04/2011 - 00:00

"The Canon EF 70-300mm f/4.5-5.6 USM DO IS is a unique lens in its class. This is not all that obvious from its naked specifications but because of its DO design. DO refers to a multi-layer Diffractive Optical element that bends light steeper than conventional (refractive) elements thus allowing a shorter design in

Post date: 27/08/2010 - 00:00

""A zoom lock switch (above) on the Canon EF 70-300mm f/4.5-5.6 DO IS USM Lens is a nice feature - It prevents the lens from extending when you don't want it to. The trade-off is that it makes the lens slower to put into action. Use it when you want to, don't use it when you might need to grab a quick shot. 

Post date: 18/01/2010 - 17:00

Specifications

DXO Mark Score
Resolution: 
5.0 P-Mpix
Transmission: 
5.9 TStop
Distortion: 
0.20%
Vignetting: 
0.4 EV
Chr. aberration: 
9.00µm
Specifications
Lens type: 
Zoom
Lens Mount: 
Canon EF mount
Canon EFS mount
AF Motor type: 
Ring USM
Optical characteristics
Focal Length: 
70 - 300mm
Internal zooming: 
No
Angle of view: 
34° - 8.25°
Zoom Ratio: 
4.2x
Max Magnification: 
0.2x
Lens construction: 
18 elements in 12 groups (1 Three-layer Diffractive Optical (DO) element)
Diaphragm Blades: 
6 aperture blades circular opening
Maximum Aperture: 
f/4.5 - 5.6
Minimum Aperture: 
f/32.0 - 38.0
Aperture ring: 
No
Internal Focusing: 
Yes
Front lens element rotating: 
No
Minimum Focusing Distance: 
1.40m
Distance Scale: 
Yes
Full-Time manual focus: 
Yes
Auto Focus / Manual Focus switch: 
Yes
Stabilization system details: 
Up to 3-stops Image Stabilizer (IS) technology
Physical characteristics
Diameter: 
83.0mm
Length: 
99.0mm
Body material: 
Plastic with metal mount
Filter Diameter: 
58mm
Lens Hood included: 
Yes

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