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Sigma 28mm f/1.8 Macro EX
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Reviews
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Date product posted
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0
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713
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Mon June 5, 2006
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No recommendations
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None indicated
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None indicated
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Description:
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This lens has a fast F1.8 maximum aperture, with macro-focusing capability. It also incorporates the floating focus system and the use of two aspherical lens elements to minimize distortion, spherical aberration and astigmatism. Minimum vignetting optical construction means you can obtain adequate peripheral brightness with an 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 new lens are lead and arsenic free ecological glass.
Key Features
* Minimum focusing, down to 20cm/7.9inches (reproduction ratio 1:2.9
* Compact length of 3.1 inches (80mm)
* Weight of 480g.
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Keywords:
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Sigma 28mm f/1.8 Aspherical Macro EX lens
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