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70-300mm f/4-5.6 APO DG Macro Autofocus Lens for Pentax AF


From Sigma | Model #: SI703004DGPA

 

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70-300mm f/4-5.6 APO DG Macro Autofocus Lens for Pentax AF

Product Description

Sigma's 70-300mm f4-5.6 APO DG Macro is one of several tele zoom lenses. It is a compact Apochromatic tele zoom lens incorporating two Special Low Dispersion glass elements in the front lens group, plus one Special Low Dispersion glass element in the rear lens group, to minimize chromatic aberration.

 

This Tele-Macro Zoom lens is capable of focusing down to 1:2 (half life-size) reproduction ratio at 300mm focal length. It also has a switch for changeover to macro photography at focal lengths between 200mm and 300mm. The lens materials used in this product are lead and arsenic free ecological glass.

The improved DG lens design corrects for various aberrations. This lens is specially coated to get the best color balance whilst cutting down on ghosting caused by reflections from the digital image sensor.

Performance
Focal Length 70 - 300mm
Aperture Maximum: f/4 - 5.6
Minimum: f/22 - 32
Camera Mount Type Pentax K
Format Compatibility 35mm Film / Full-Frame Digital Sensor
Pentax Digital (APS-C)
Angle of View 34.3° - 8.2°
Minimum Focus Distance 59.1" / 150.11 cm
Magnification 1 - 2x
Maximum Reproduction Ratio 1:2
Optical Design 14 Elements in 10 Groups
Diaphragm Blades 9
Features
Image Stabilization No
Autofocus Yes
Tripod Collar No
Physical
Filter Thread 58 mm
Dimensions (DxL) Approx. 3.0 x 4.70" / 7.62 x 11.95 cm
Weight 19.4 oz / 550 g
Warranty Length
USA Warranty Extension