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Sigma 15-30mm f/3.5-4.5 EX DG ASP

Sigma 15-30mm f/3.5-4.5 EX DG ASP lens
 

Full frame sized image

Lenses that create APS-C sized image are designed for digital only. They cannot be used on cameras that have image sensor larger than the APS-C format. These lenses are not suitable for film cameras either.

 

No Ultrasonic AF

Lenses with ultrasonic focusing mechanism tend to be quiter and faster than traditionally focusing lenses.

 

No stepping motor AF

Lenses with stepping motor focusing mechanism are better for contrast based focusing, and are quiter and faster than traditionally focusing lenses.

 

No Low Dispersion lens element is used

Low Dispersion lens elements help to reduce chromatic aberration.

 

Not stabilized

Image stabilization helps to reduce blur caused by hand shake, especially at high focal length or in low light situations. Image stabilization can give 1 to 3 stop advantage over none stabilized lens, based on the reciprocal rule.

 

Metal mount

Cheaper lenses are usually equipped with plastic mount, while more expensive, professional lenses have metal mount. In general, metal mounts are more durable, and a good thing to have when lenses are changed a lot. When a camera is used mainly with one lens, the material of the lens mount is not that important.

 

Internal Focusing

Internally focusing lenses don't change their size while setting focus.

 

The front lens is fixed

The fixed front lens is not rotating during zoom and/or focusing. This allows the photographer to use petal shaped lens hood. Fixed front lenses also make the use of polarization filters a lot easier.

 

Supports drop-in filters

Drop-in filters are used in those lenses where either the front lens is too large, or the field of view doesn't permit the use of traditional filters at the front of the lens. Usually bright tele and ultra-wide angle lenses support this filter type.

This is an ultra-wide zoom lens that covers a large wide-angle range from 15 mm to 30 mm. With a minimum focusing distance of 30 cm throughout the entire zoom range, it is an idael lens for Digital SLR Cameras. With aspeherical lenses in the front and rear lens groups, this lens has excellent correction for distortion - a particular problem for oom lenses - and for all types of aberration, and it displays a hig level of optical performance. The lens is equipped with an integral Petal-type hood to block out extraneous light.

Sigma 15-30mm f/3.5-4.5 EX DG ASP Specification

Available mount(s) Canon EF, Nikon F, Pentax K, Sony / Minolta A, Sigma
Application(s) Landscape, Interiors, Architecture
Category(s) Wide angle zoom
Multiplier
Stabilizer no
Focal length 15 - 30 mm (2× zoom)
Lens construction 17 elements in 13 groups
Angle of view 35mm: 110.5-71.6°
digital: 79.3-45.0°
Number of blades 8
Maximum aperture wide: f/3.5 tele: f/4.5
Minimum aperture wide: f/22 tele: N/A
Minimum focusing distance 30 cm
Magnification 0.17×
Filter size N/A
Size ∅ 87 × 132.5 mm
Weight 620 g
Notes
AF speed N/A
AF sound
Internal focusing yes
Internal zoom N/A
Fix front lens yes
Mount type metal
Weather sealed N/A
Drop in filter yes
Ultrasonic AF no
Stepping motor AF no
APS-C sized circle no
Low dispersion lens element no
Hard case N/A
Soft case N/A
Lens hood included
printable lens hood
Tripod adapter N/A
Discontinued yes
Sigma 15-30mm f/3.5-4.5 EX DG ASP Specification

Sigma 15-30mm f/3.5-4.5 EX DG ASP Reviews

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Sigma 15-30mm f/3.5-4.5 EX DG ASP in the news

Sigma 15-30mm f/3.5-4.5 EX DG ASP Owner Reviews

Most useful owner reviews from Amazon

I love this lens

May 18, 2005

This lens is very sharp especially at 15mm f8-16 which is the aperture we use for landscape. It can be used on 35mm film and it will be really really wide at 15mm. It can also be used with digital camera. I used with D70 and love it. It is much sharper than sigma 12-24 if you check the mtf chart at sigma web site.
It is my favorite lens.

Great wide angle

Sep 23, 2007

Great wide-angle lens for the money. Little fall-off in corners, especially at f8 and above. I would recommend this lens to anyone who cannot afford to buy the Nikon lenses. The only complaint (?) is that the zoom ring takes a bit of effort to turn. The focus is fast and accurate, and pictures are crisp.

Sigma 15-30mm f/3.5-4.5 EX DG ASP Sample Photos

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