Sigma 18-50mm F2.8-4.5 DC OS HSM

Announced Mar 3, 2009 •
Zoom lens | Canon EF, Pentax KAF3, Sony/Minolta Alpha, Sigma SA Bayonet, Nikon F (DX)
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The build quality is on a very high level for this lens class which is produced in Japan. The only issue here is the focus ring that rotates during the autofocus. Thanks to HSM the autofocus itself is quiet and reasonably fast and the optical stabilization is a welcome feature even at short focal lengths. On my Nikon D3200 ,the Sigma 18-50mm is decently sharp, less so on the wide end, but improving as the lens is both stopped down and zoomed in towards 50mm. The center resolution is no doubt ...

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Dolven
 
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I paid 199€ for this lens. It´s a little bit more expensive compared to the standard 18-55mm from Canon, but the Sigma is worth it. All zooming and focusing happens inside the barrel of the lens, you get a larger aperture than you get in the standard from Canon, and you get a free lens hood. The OS works well, and gives you the same advantages that Canon´s IS gives you. Up to four stops of extra shutter speed. This lens improves in several steps: 1 Everything happens inside the barrel. 2 ...

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This lens has one step larger aperture, and also has a HSM motor which is working really quiet, however not as quiet as Canon or Nikon's USM OR SWM. But consider its price of 200 something, it is a nice lens to chose when you get a APS-C body without kit lens. At this price, I would recommend you to get this lens. It is a good deal.

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The Sigma 18-50mm is geared toward shooters who want to replace their kit lenses with something slightly better. Build quality is quite good and the lens doesn't change length when zooming! Center sharpness is also good, OS works quite well and everything works as it should. Quite a bit bigger than most kit lenses, but also 2/3 of a stop faster at all focal lengths. Check out my complete review here: http://juhoaj.blogspot.com/2011/10/sigma-18-50mm-f28-45-dc-os-hsm.html Problems: Rather high ...

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