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.
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.
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.
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.
10-20mm F3.5 EX DC HSM
13 elements in 10 groups
Angle of View
109.7 - 70.7°
Number of Diaphragm Blades
Minimum Focusing Distance
24cm / 9.4in.
Maximum Magnification Ratio
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.
520g / 18.3oz.
CASE and PENTAL TYPE LENS HOOD (LH873-01) included.
Corresponding AF Mounts / Barcode No.
Nikon F Mount
Canon EF Mount