EX (EX Lens)
The exterior of this lens is EX-finished to denote the superior build and optical quality, and to enhance its appearance.

IF (Inner Focus)
To ensure stability in focusing, this lens moves the inner lens group or groups without changing the lens' physical length.

ASP (Aspherical Lens)
The aspherical lens complex allows freedom of design, improved performance, a reduced number of component lenses and a compact size.

DG (DG for DIGITAL & FILM)
These are large-aperture lenses with wide angles and short minimum focusing distances. With an abundance of peripheral illumination, they are ideal lenses for Digital SLR Cameras whilst retaining suitability for traditional 35mm SLRs.

15-30mm f/3.5-4.5 EX DG ASHPHERICAL

A super wide-angle zoom covering from 15mm ultra-wide angle to 30mm wide-angle

Sigma provides the new ultra-wide angle zoom lens from 15mm and this lens is the first of its kind in the world. It can be useful for images of landscapes, large buildings, group photographs or even more. The perspective that changes with the angle-of-view gives picture an extraordinary feeling.

Minimum focus distance with 30cm (11.8 in.) at all focal length
Delicate compositions can be adjusted by lens zooming and this is helpful for close-up photography. Provides deep depth of field with its short focal length for amazing photographic expressions.

Desirable for digital SLR cameras
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(11.8 inches) throughout the entire zoom range, it is an ideal lens for Digital SLR Cameras.

Aspherical lens for distortion correction
It incorporates hybrid aspherical lens in the front lens group to minimize distortion and astigmatism, and molded glass aspherical lens in the rear lens group to minimize spherical aberration. Minimization of the distortion is a most important issue for zoom lens, but Sigma has succeeded, to provide image quality with minimal distortion by employing aspherical lenses.

Inner focus system
This lens incorporates an internal focusing system, which eliminates front lens rotation. Since focusing do not change its overall length, this lens is easy to hold and use. Also it is allowing the use of a Petal-type Hood.

Handling
The lens also incorporates Dual-Focus (DF) mechanism. It is easy to hold the lens, since the focusing ring does not rotate during auto-focus, yet it provides adequate focusing torque of the focusing ring during manual focusing of the lens.

Price: £259

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AF MOUNTS
> CANON EOS
> NIKON
> MINOLTA
> SONY
> PENTAX
> SIGMA

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Lens Construction
17 Elements in 13 Groups

Angle of View
110.5 - 71.6 degrees

Number of Diaphragm Blades
8 Blades

Minimum Aperture
F22

Minimum Focusing Distance
30cm

Maximum Magnification
1:6

Filter Size
Rear Type (Gelatin Filter)

Dimensions
Diameter 87mm X Length 132.5mm

Weight
620g