Sigma 17-50mm f/2.8 AF OS HSM EX DC
 | Outdated Product $19.95 The Sigma AF 17-50mm zoom lens is designed primarily for those who need wide to medium shooting angles: its focal length range is 17-50mm. Designed for APC sensor and can be used with Canon, Nikon, Pentax, Sigma and Sony systems. Design features include an image stabilizer and ultrasonic AF drive. |
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The Sigma AF 17-50mm zoom lens is designed primarily for those who need wide to medium shooting angles: its focal length range is 17-50mm. Designed for APC sensor and can be used with Canon, Nikon, Pentax, Sigma and Sony systems. Design features include an image stabilizer and ultrasonic AF drive.
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If you are not ready to shell out your hard-earned money for the Canon EF-S 17-55mm f/2.8 IS USM aperture zoom, there is another model on the market in the face of the Sigma AF 17-50mm f/2.8 EX DC OS HSM, which is an excellent alternative to the native lens .
Picture
In the course of testing the lens, the specialists of the photozone.de resource revealed the superiority of the Sigma representative in terms of sharpness over the analogue lens from Canon. Sigma produces a picture with pure and juicy colours without any distortion and parasitic effects. Phenomena such as chromatic aberration and vignetting can only appear at the minimum focal length paired with a fully open aperture.
Autofocus
One of the main features of the lens is the autofocus system, which has both pluses and minuses. On the one hand, automation very quickly and accurately focuses. And she does it very quietly, which is a huge plus when shooting video. On the other hand, the focus ring itself rotates within 45 ° during focus, which is why in automatic mode there is no possibility of manual focus adjustment.
Zoom
The zoom is also implemented in an interesting way — the focal length ring rotates in the opposite direction in comparison with other lenses, i.e. counterclockwise. In the process of zooming, a small “trunk” extends from the body. The front lens does not rotate, which allows the use of polarizing filters with a diameter of 77 mm.
Stabilizer
Also, an effective stabilizer has found a home on board the lens, designed to compensate for hand trembling and allowing you to win 3-4 exposure steps. That's just in the on state, it greatly eats up the battery charge.
Competitors
In terms of cost, the Sigma AF 17-50mm f / 2.8 EX DC OS HSM outperforms the original lens from Canon by one and a half to two times. In its price range, Sigma's competitor is the Tamron SP AF 17-50mm f/2.8 XR Di-II VC LD IF glass. It is about the same in optical properties, but with a much noisier stabilizer. The choice depends purely on your personal preferences.
