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with a 70-300mm focal length,(105 - 450mm in 35mm format) this Powerful telephoto is good for portraiture and more scenic field sports and scenic wildlife shots. Capable of macro photography, this lens has a 1:2 maximum close-up magnification at the 300 mm focal length.

It’s the ideal high performance lens for portraits, sports photography, nature photography, and other types of photography that frequently use the telephoto range. It also has a switch for changeover to macro photography at focal lengths between 200mm and 300mm with a maximum close-up magnification from 1:2.9 to 1:2.SLD (Special Low Dispersion) glass in this lens provides excellent correction of chromatic aberration

This telephoto zoom lens incorporates Sigma’s original OS (Optical Stabilizer) function and is housed in a compact construction.  With a focal range of 70-300mm, this is a good complement to a standard wide lens to complete your photographic needs from wide to telephoto. Applications include portraiture and general photography. The OS function offers the use of shutter speeds approximately 4 stops slower than would otherwise be possible while the SLD (Special Low Dispersion) glass element provides excellent correction for all types of aberrations. High image quality is assured throughout the entire zoom range.

The Sigma 10-20mm F4-5.6 EX DC lens allows enjoyment of super wide-angle photography and it is a very powerful tool for indoor shooting and landscape photography with APS-C size image sensors of digital SLR cameras.

The SIGMA 18-250mm F3.5-6.3 DC OS HSM incorporates Optical Stabilizer which provides not only an anti-shake function for the camera body, but also compensates for image shaking in the view finder as the Optical Stabilizer is built in to the lens.

This wide angle to short telephoto lens is great for vast, sweeping landscapes, very wide group shots as well as close ups from far away for creative portraiture.
The 18-250mm incorporates four Special Low Dispersion glass elements and three aspherical lens elements for excellent image quality throughout the entire zoom range, an inner focusing system which eliminates front lens rotation, and a super multi-layer coating reduce the ghost in the backlight photography.

This light weight lens is designed exclusively for APS-C size sensor Pentax SLRs (most entry to mid range).

Specifications

35mm equivalent focal length range: 25-80mm
Lens perspective: Standard Wide Zoom
Minimum aperture: f22
Image stabilisation: In-camera stabilisation
Hyper-Sonic Motor YES
Special lens elements: 17 Elements in 13 Groups
Filter size: 77mm
Dimensions: 83.5 x 91.8 mm
Maximum magnification: 1:5
Recommended applications: General use, Landscapes, Interiors

This Medium Weight, 555g lens is designed exclusively for APS-C size sensor Pentax SLRs (most entry to mid range).

Specifications

35mm equivalent focal length range: 12-24mm
Lens perspective: Wide Zoom Lens
Minimum aperture: f22
Image stabilisation: In Camera stabilisation
Hyper-Sonic Motor: YES
Special lens elements: 15 Elements in 11 Groups
Weight: 555g
Dimensions: 75 x 105.7
Maximum magnification: 1:7.8

Recommended applications: Landscapes, Interiors

This heavy weight, 1970g lens is designed exclusively for full-frame Pentax SLRs (most top range) and is compatible with APS-C size sensor Pentax SLRs aswell. When used on an APS-C size sensor camera, you will not achieve full frame capture.

Specifications

35mm equivalent focal length range: 80-800mm
Lens perspective: High Powered Telephoto
Minimum aperture: f22
Image stabilisation: lens stabilisation
Hyper-Sonic Motor: YES
Special lens elements: 22 Elements in 16 Groups
Filter size: 95mm
Weight: 1970g
Dimensions: 104.4 x 219mm
Maximum magnification: 1:3.1
Recommended applications: Field-based sports