Ultra wide-angle zoom lens
with a large, constant aperture of F3.5, designed specifically
for digital SLR cameras

This Ultra wide-angle zoom lens has a maximum aperture of F3.5 throughout the entire zoom range, making it suitable for low-light and indoor photography. It’s wide-angle of view from 102.4*degrees produces striking images with exaggerated perspective, enabling photographers to emphasize the subject. ELD (Extraordinary Low Dispersion) glass, SLD (Special Low Dispersion) glass and aspherical lenses provide excellent correction of all types of aberrations. The super multi-layer lens coating reduces flare and ghosting and creates high image quality throughout the entire zoom range. The HSM (Hyper Sonic Motor) ensures fast and quiet autofocus, while allowing full-time manual focus override.

* The angle of view changes depending on which camera model the lens is attached to.

Features

Ultra wide-angle zoom from 102.4* degrees

The 10-20mm F3.5 EX DC HSM lens offers photographers greater freedom of expression by rotating the zoom ring. It is a very powerful tool for architectural, indoor and landscape photography.

※ The angle of view changes depending on which camera model the lens is attached to.

Quiet and fast AF

This lens incorporates HSM (Hyper Sonic Motor), which ensures a quiet and high-speed auto focus as well as full-time manual focus override by rotation of the focus ring.*

* AF will not function if the Pentax camera bodies do not support HSM.

Exaggerated perspective

This ultra wide-angle lens allows photographers to create an exaggerated perspective between the subject and the background to emphasize, for example, expanses of a landscape.

Large F3.5 aperture through the entire zoom range

The large, constant aperture of F3.5 provides a bright image in the viewfinder, which helps photographers easily check focusing and composition.

Petal-type Hood

An inner focusing system eliminates front lens rotation, making the lens particularly suitable for using the included petal-type lens hood which blocks out extraneous light.

Superior image quality

Two ELD (Extraordinary Low Dispersion) and one SLD(Special Low Dispersion)glass elements are employed for effective compensation of color aberration. The use of two glass mold and two hybrid aspherical lenses offer excellent correction for distortion and astigmatism and assure superior image quality. The super multi-layer coating reduces flare and ghosting and provides high contrast images throughout the entire zoom range.

Minimum focusing distance of 24cm (9.4") at all focal lengths

This lens has a minimum focusing distance of 24cm (9.4 inches) throughout the entire zoom range. This close focusing distance on such a wide-angle lens emphasizes perspective and allows the photographer to capture high quality images, not only of the foreground subject but also the surrounding scenery.

Specifications

10-20mm F3.5 EX DC HSM

Lens Construction

  • ELD glass
  • SLD glass
  • ASPHERICAL LENS

Lens Construction

13 elements in 10 groups

Angle of View

  • 109.7 - 70.7°

Number of Diaphragm Blades

7 Blades

Minimum Aperture

F22

Minimum Focusing Distance

24cm / 9.4in.

Maximum Magnification Ratio

1:6.6

Filter size

φ82mm

Dimensions (Diameter × Length)

  • ⌀87.3mm × 88.2mm / ⌀3.4in. × 3.5in.
  • *The length of a lens is measured from the filter surface to its mount.

Weight

  • 520g / 18.3oz.

Supplied Accessories

CASE and PENTAL TYPE LENS HOOD (LH873-01) included.

Corresponding AF Mounts / Barcode No.

  • SIGMA SA-Mount
    00-85126-20256-9
  • Nikon F Mount
    00-85126-20255-2
  • Canon EF Mount
    00-85126-20254-5
  • Sony A-Mount
    00-85126-20262-0
  • Pentax Mount
    00-85126-20261-3

Performance / Data

MTF Chart

The MTF chart gives the result at the wide-open aperture
Spatial frequency S:Sagittal Line M:Meridional Line
10lp/mm
30lp/mm

MTF chart guide

Distortion

Vignetting

F3.5
F8
F16
F3.5
F8
F16

Vignetting guide

Product Lineup

10-20mm F3.5 EX DC HSM

  • SIGMA SA-mount

    Supplied Accessories

    CASE and PENTAL TYPE LENS HOOD (LH873-01) included.

    Barcode No.
    00-85126-20256-9
  • Nikon F mount

    Supplied Accessories

    CASE and PENTAL TYPE LENS HOOD (LH873-01) included.

    Barcode No.
    00-85126-20255-2
  • Canon EF mount

    Supplied Accessories

    CASE and PENTAL TYPE LENS HOOD (LH873-01) included.

    Barcode No.
    00-85126-20254-5

Support

10-20mm F3.5 EX DC HSM

Accessories

Supplied Accessories

LENS HOOD LH873-01

Barcode No.
00-85126-92693-9

FRONT CAP LCF-82mm Ⅲ

Barcode No.
00-85126-93002-8

REAR CAP LCR Ⅱ

* The image is for SIGMA.

  • SIGMA SA-mount

    Barcode No.
    00-85126-92949-7
  • Nikon F mount

    Barcode No.
    00-85126-92950-3
  • Canon EF mount

    Barcode No.
    00-85126-92951-0

Separately Sold Accessories

WR CERAMIC PROTECTOR 82mm

With many applications in aerospace and other industries, glass ceramics is an extremely tough type of crystallized glass that serves as the foundation for Clear Glass Ceramics. While featuring the high transmittance required of optical devices, this advanced new material combines greater hardness than chemically strengthened glass and greater flexibility than sapphire crystal glass. These qualities make Clear Glass Ceramics the ideal material for protective lens filters.

* Thinner frame wide type.

Barcode No.
00-85126-93183-4

WR PROTECTOR 82mm

Water-repellent, Antistatic type. Protector is developed to protect the lens surface from dirt and dust as well as scratches. It is an ideal filter for regular use as it is completely colorless so does not affect color reproduction.

* Thinner frame wide type.

Barcode No.
00-85126-93097-4

PROTECTOR 82mm

Normal type. Protector is developed to protect the lens surface from dirt and dust as well as scratches. It is an ideal filter for regular use as it is completely colorless so does not affect color reproduction.

* Thinner frame wide type.

Barcode No.
00-85126-93110-0

WR UV FILTER 82mm

UV Water-repellent, Antistatic type. UV filter prevents the bluish tone that generates when the weather is fine, by absorbing ultraviolet rays. It is effective in most situations, such as landscape, portrait and general photography on a sunny day. It is also an ideal filter for regular use as it is completely colorless so does not affect color reproduction.

* Thinner frame wide type.

Barcode No.
00-85126-93071-4

WR CIRCULAR PL FILTER 82mm

PL Water-repellent, Antistatic type. Circular PL filter removes the reflection of water surface and glass windows, and increases the contrast in landscape photography.

* Thinner frame wide type.

Barcode No.
00-85126-93084-4