EX (EX Lens) The exterior of this lens is EX-finished to denote the superior build and optical quality, and to enhance its appearance.
DC (DC Lens) Sigma’s DC lenses are designed for cameras with a cropped sensor. Do not put a Sigma DC lens on a camera with a full-frame sensor, such as the 5D Mark III. These are special lenses designed so that the image circle matches the smaller size of the image sensor of most digital SLR cameras. Their specialised design gives these lenses the ideal properties for digital cameras, the compact and lightweight construction is an added bonus.
HSM (Hyper-Sonic Motor) This lens uses a motor driven by ultrasonic waves to provide a quiet, high-speed AF.
Specifications
Lens Type |
Wide-Angle Zoom |
Focal length - wide (mm) |
10 |
Focal length - tele (mm) |
20 |
Max aperture - wide |
3.5 |
Max aperture - tele |
3.5 |
Minimum aperture |
22 |
Minimum focus distance (m) |
0.2 |
Image stabilisation |
No |
Sensor format |
APS-C size |
Lens mount |
Pentax K |
Lens elements |
13 |
Lens groups |
10 |
Aperture blades |
7 |
Filter thread (mm) |
82 |
Enlargement Ratio |
1:6.6 |
Autofocus motor |
HSM |
MF switch |
Yes |
Colour |
Black |
Size |
87.3 x 88.2 mm |
Weight (g) |
465 |
Hood model |
LH873-01 |