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Sigma Wide Angle 24mm f/1.8 EX Aspherical DG DF Macro Autofocus Lens for Pentax AF

B&H # SI2418MPAF MFR # 432109 USA
No Longer Available

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This 24mm lens has a fast f/1.8 maximum aperture with macro focusing capability (minimum focusing distance is 7.1" for a reproduction ratio of 1:2.7). The 9-bladed aperture diaphragm obtains beautiful, circular out of focus characteristics. It incorporates a floating focus system and uses two aspherical elements for minimized distortion, spherical aberration and astigmatism. The lens front does not rotate during focusing, thus allowing the use of a "perfect hood" and the easy polarizing filters. Optical construction was created to minimize light falloff (darkening of the image corners) at maximum aperture-a big benefit particularly for digital cameras. Materials used in this lens are lead and arsenic free ecological glass.

Performance
Focal Length 24mm
Aperture Maximum: f/1.8
Minimum: f/22
Camera Mount Type Pentax K
Format Compatibility 35mm Film / Full-Frame Digital Sensor
Pentax Digital (APS-C)
Angle of View 84.1°
Minimum Focus Distance 7.1" (18.03 cm)
Magnification 0.37x
Maximum Reproduction Ratio 1:3
Elements/Groups 10/9
Diaphragm Blades 9
Features
Image Stabilization No
Autofocus Yes
Tripod Collar No
Environmental
Physical
Filter Thread 77 mm
Dimensions (DxL) Approx. 3.3 x 3.1" (8.38 x 7.87 cm)
Weight 1.07 lb (485 g)
Sigma Wide Angle 24mm f/1.8 EX Aspherical DG DF Macro Autofocus Lens for Pentax AF
  • Front & Rear Lens Caps
  • Hood
  • Case
  • Limited 1-Year North and South America Warranty Against Manufacturing and Workmanship Defects.
  • Limited 3-Year U.S.A. Extended Warranty Extension Against Manufacturing and Workmanship Defects.
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