




| 28-70mm f/2.8
EX DG |
| Lens Hood |
| Fitted Padded
Case |
| Front and Rear
Caps |
| Instruction
Manual |
| 1 Year Warranty
Card |
| 2 Year Extended
UK Warranty Card |


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Standard
Zoom Lens
28-70mm f/2.8 EX DG
Compact, lightweight, yet robust, large
aperture zoom lens
This compact, large and constant F2.8 aperture zoom lens and is ideal
for digital SLR cameras. Two SLD elements and four aspherical lenses provide
the ultimate correction against distortion as well as all types of aberration,
especially spherical aberration. Its advanced optical design ensures high
performance throughout the entire zoom range.
The use of aspherical lenses in the construction of this lens not only
corrects aberrations but also produces a very small and lightweight lens
design. Its compact, yet robust, construction has an overall length of
87.2mm, maximum diameter of 74mm, filter size of diameter 67mm and weight
of 510g.
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-
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Compact,
lightweight Zoom Lens
The use of aspherical lenses in the construction of this lens not only
corrects aberrations but also produces a very small and lightweight lens
design. Its compact, yet robust, construction has an overall length of
87.2mm, maximum diameter of 74mm, filter size of diameter 67mm and weight
of 510g.
F2.8 large aperture over the entire zoom range
This lens offers a large aperture of F2.8 over its entire range of focal
lengths and its large depth of field offers greater freedom of creative
expression.
This lens is perfectly suited for low light conditions indoors or at dusk.
It covers wide angle to medium telephoto and is ideally suited to a wide
range of subjects.
Excellent optical performance
Two Special Low Dispersion (SLD) glass elements are provided for effective
compensation of color aberration, which is a common problem with super-wide
angle lenses. Four pieces of hybrid aspherical lenses offer excellent
correction for distortion as well as all types of aberration. This lens’
excellent optical performance makes it an ideal lens for Digital SLR Cameras
as well as film SLR cameras.
Super Multi Layer Coating
It incorporates "Super Multi Layer Coating" to reduce the influence
of harmful light caused by reflections from the digital image sensor.
Minimum focusing distance of 33cm at all focal lengths
It has a minimum focusing distance of 33cm at all focal lengths and a
maximum magnification ratio of 1:4.4, which is very convenient for close-up
photography.
Zoom Lock Switch Mechanism
This lens is also equipped with a zoom lock that eliminates "Zoom
Creep". This remarkably compact, high performance zoom lens is ideally
suited for traveling.
Petal Type Hood
Since the front of the lens does not rotate, a Petal-type hood and circular
polarizing filters can be easily used.
Lens
Construction |
|
14
Elements in 12 Groups |
Angle
of View |
|
75.4
- 34.3 degrees |
Number
of Diaphragm Blades |
|
9
Blades |
Minimum
Aperture |
|
F22 |
Minimum
Focusing Distance |
|
33cm |
Maximum
Magnification |
|
1:4.4 |
Filter
Size |
|
67mm |
|
Dimensions |
|
Diameter
74mm X Length 87.2mm |
Weight
|
|
510g |
SRP |
|
£279.99 |

|
28-70mm
f/2.8 EX DG |
|
SIGMA |
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CANON |
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NIKON
(D) |
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SONY |
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PENTAX |
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Ephotozine
- July 2005
'I have found with a number of lenses made for 35mm film that
edge resolution was as good at the edge of a cropped sensor as
in the centre and this was again the case and overall I was impressed
with this lens. As a fast and relatively lightweight lens for
standard to short telephoto work, this lens has a lot going for
it. …it is well built, nicely torqued and felt right in
use.’ |
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Photography
Monthly - October 2006
'Quality internal construction results in well-controlled chromatic
aberrations and distortions and at apertures between f/8 and f/16
this lens produces razor sharp images at both extremes of the focal
length range, especially at the wider end.’ |
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Which
Digital Camera - October 2006
'The zoom ring is nicely torqued, with no creep, so there’s
no need to use the lock provided. A fast and relatively lightweight
lens, which has a lot going for it. Small and well built, it’s
ideal for portraits. Picture quality is good; excellent when stopped
down.’ |
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Digital
Photo Pro - June 2007
'On test this was one of the best lenses we looked at. The resolution
throughout the zoom range was high, as was the contrast, while the
overall colour was pleasing. I would certainly be happy to work
with this lens based on the test analysis and it has a nice balance
between weight and size without compromising on its optical qualities.
Overall I would say that this lens looks like a bit of a bargain.’ |
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