Sigma 28mm f/1.8 EX DG Aspherical Macro AutoFocus Wide Angle Lens for Nikon AF-D Cameras

SKU: US 681070
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About the Sigma 28mm F/1.8

Features minimum focusing, down to 20cm/7.9inches (reproduction ratio 1:2.9). The iris diaphragm has 9 diaphragm blades to obtain beautiful out of focus image. It incorporates the floating focus system and the use of two aspherical lens elements to minimize distortion, spherical aberration and astigmatism. The lens incorporates minimum vignetting optical construction in order to obtain adequate peripheral brightness with open aperture. Internal focus system of the lens eliminates front lens rotation, thus allowing the use of a Perfect Hood and easy use of polarizing filters. The lens also incorporates a dual-focus mechanism. It is easy to hold the lens, since focusing ring does not rotate during auto-focus, and yet provides adequate torque of the focusing ring during manual focusing of the lens. The lens materials used in this lens are lead and arsenic free ecological glass.

The Sigma 28mm F/1.8 is commonly used for Night photography and more.The Sigma 28mm F/1.8 is popular because customers like the following qualities of the Sigma 28mm F/1.8: Consistent output and Fast / accurate auto-focus.

Sigma 28mm F/1.8 Includes

  • Hood
  • Case

Sigma 28mm F/1.8 Specifications

Construction 9 Groups / 10 Elements
Angle of view 75.4°
F stop range 1.8-22
Closest Focusing Distance 20cm / 7.9"
Maximum Magnification 1:2.9
Filter Size 77mm
Dimensions (Length x Diameter) 83.5 x 80mm / 3.3 x 3.1"
Full Extended Length 88.9mm / 3.5"
Weight 480g / 16.9 oz.
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