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

This Item Includes: • Front & Rear Lens Caps • Hood • Case • 1-Year Worldwide Warranty + 3-Year Extended USA Warranty 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.

Filter Size 77mm
 
f/Stop Range 1.8-22
 
Minimum Focus Distance 7.1" 
 
Magnification 1:2.7
 
Zoom/Focus Control Not applicable
 
Angle of View 84.1 Degrees
 
Groups/Elements 9/10
 
Tripod Collar No
 
Length 3.1" 
 
Maximum Diameter 3.3" 
 
Weight 1.07 lb