Sigma 8-16mm f/4.5-5.6 DC HSM Ultra-Wide Zoom Lens for Sony
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Item: 17654
Availability: In Stock
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Condition: New
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Filters & Filter Kits
Pouches & Cases
Assorted Hoods
Extenders, Converters, Close Up Accessories
Caps & Lens Holders
Lens Cleaning & Care
Cables, Adapters & Storage Devices
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For such a wide-angle lens, the 8-16mm provides impressive results for sharpness, especially where it's likely to be used most: wide-open (ƒ/4.5) at its widest angle (8mm). At this setting, there is a generous sweet spot of tack-sharp (1 blur unit) clarity in the center of the frame; in the corners, it's around 1.5 blur units. There isn't much point to stopping down - there is only a slightly marginal improvement at ƒ/5.6 - and after that there is slight degradation, though it isn't really noteworthy until about ƒ/11 where we note results just shy of 2 blur units across the frame. At ƒ/16 it's just over 2 blur units, and fully stopped-down at ƒ/22, it's around 3.5 blur units. Performance is similarly good at 14-16mm, though the maximum aperture gets even smaller at ƒ/29, and the results there are mediocre (around 5 blur uneven blur units).
There's a very slight drop in performance between 10-13mm - that is to say, it's excellent, but not quite as excellent as either the wide end (8-9mm) or the other wide end (14-16mm). Corner softness is just slightly higher at this middle setting, hitting 2 blur units wide open at ƒ/5. But the differences are very slight indeed.
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Name Sigma 8-16mm ƒ/4.5-5.6 DC HSM Image Circle APS-C Type Ultra Wide Zoom Focal Length 8 - 16mm APS Equivalent 1.5x: 12 - 24mm; 1.6x: 12.8 - 25.6mm Max Aperture ƒ/4.5 - 5.6 Min Aperture ƒ/22-29 Diaphragm Blades 7 Lens Construction 15 Elements in 11 Groups, including 3 aspherical and 4 FLD elements Diagonal Angle of View(Based on image circle) 114.5 to 75.7 degrees Focus Details Internal Focus; HSM with full-time manual override Front Element Rotation No Zoom System Rotary Closest Focus 24cm / 9.4 in Magnification Ratio 0.13x / 1:7.8 Filter Size n/a -
• Front & Rear Lens Caps
• Lens Hood
• Lens Pouch
• Brand New Factory Fresh Import Model
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