Tamron 10-24mm f/3.5-5.6 Di-II N-II with Hood for Pentax

Product description
SP AF10-24mm F/3.5-4.5 Di-II LD Aspherical [IF]

Di II: Lenses are designed for exclusive use on digital cameras with smaller-size imagers and inherit all of the benefits of our Di products. These lenses are not designed for conventional cameras and digital cameras with image sensors larger than 24mm x 16mm.
This ultra wide-angle zoom lens for digital SLR cameras, with the first-ever focal length range of 10-24mm-the 35mm equivalent of 16mm ultra wide-angle to 37mm semi-wide-angle-is a perfect tool for creating dramatic landscape, cityscape,a nd seascape imagery. At the ultra wide-angle setting, you'll be able to capture vistas beyond what the eye can see. At the semi-wide-angle setting, you'll capture scenes with angles of view almost as spectacular.
Technical details

Model
B001
Lens Construction (Groups/Elements)
9/12
Angle of View
Diagonal 108¡44' - 60¡20'
Horizontal 98¡28' - 51¡36'
Vertical 75¡19' - 35¡29'
Maximum Aperture
F/3.5-4.5
Minimum Focus Distance
9.4 in / 0.24m
Macro Magnification Ratio
1:5.1 (at F=24 mm MFD 0.24m)
Filter Diameter
77
Weight
406g (14.3 oz)
Diameter x Length
3.1 in x 3.9in / 83.2mm x 85.5mm
Accessory
Flower-shaped lens hood