Sigma 10-20mm f/3.5 EX DC HS For Canon

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Sigma 10-20mm f/3.5 EX DC HSM lens for Canon.

1. Overview:

   • The Sigma 10-20mm f/3.5 EX DC HSM is designed exclusively for APS-C format digital SLRs, providing an effective focal range equivalent to 16-32mm on a full-frame camera.
   • It's a wide-angle zoom lens, perfect for capturing expansive landscapes, architecture, and creative perspectives.

2. Aperture and Optics:

   • The lens features a constant maximum aperture of f/3.5 throughout its zoom range, which is an improvement over its predecessor (the Sigma 10-20mm f/4-5.6 EX DC HSM).
   • The optical design includes two ELD (Extraordinary Low Dispersion) elements and one SLD (Special Low Dispersion) element. These elements help minimize chromatic aberrations and enhance image quality.
   • Additionally, there are four aspherical elements to correct distortion and improve sharpness.

3. Build and Handling:

   • The Sigma 10-20mm f/3.5 EX DC HSM has a robust build quality, similar to its wider sibling, the 8-16mm lens.
   • Unfortunately, it lacks weather-sealing, so be cautious in adverse conditions.
   • The lens has an 82mm filter thread, allowing you to attach filters easily. However, due to the large front element, the lens itself is quite hefty.

4. Performance:

   • Center sharpness is good across the zoom range, but corner sharpness isn't as impressive. Comparable lenses from Canon and Sigma perform better in this regard.
   • Keep in mind that this lens doesn't have optical stabilization, so using it handheld may require higher shutter speeds.
   • Barrel distortion at the minimum focal length is well controlled, and color fringing is minimal throughout the zoom range.

5. Value for Money:

   • Despite being nearly a decade old, the Sigma 10-20mm f/3.5 EX DC HSM remains a solid performer.
   • Its optical quality, combined with the constant aperture, makes it an attractive choice for photographers who want a wide-angle lens without breaking the bank.

6. Accessories:

   • The lens comes with a petal-shaped hood for better light control and protection.
   • Sigma also includes a soft padded case for safe storage when the lens is not in use.

In summary, if you're looking for an affordable wide-angle zoom with good optical performance, the Sigma 10-20mm f/3.5 EX DC HSM is definitely worth considering. Just be prepared for its weight and bulk when you're out shooting!