Introduction

Although SLR Camera is the nobility of the camera marketing, but less support of the lens, SLR cameras will be as embarrassing as losing weapons and fighters. Sigma 10-20mm f/3.5 EX DC HSM is a new super-wide lens that launched by Sigma corporation . As was the critically acclaimed 10-20mm F4-5.6 EX DC HSM upgrade products ,10-20mm F3.5 EX DC HSM has been introduced by the majority of photographers attention. Now Let us have a look the lens Features.

Sigma 10-20mm f/3.5 EX DC HSM ELD SLD Aspherical Super Wide Angle Lens for Canon Digital SLR Cameras

Sigma 10-20mm f/3.5 EX DC HSM

Features

The lens is a new constant optical lens with F3.5 aperture at the telephoto end can be maintained with a large aperture wide-angle end of the same, so the adaptation shooting range has increased, the lens structure, this camera uses a 10 group of 13 design, and can eliminate the use of non-spherical lens aberrations, the lens also uses a super multi-layer coating technology, it can effectively reduce the ghosting and glare generation. 9 blade rounded diaphragm aperture design, both inside and outside the transition to a natural focus, focus system uses Sigma’s HSM ultrasonic motor, so Auto Focusing speed and quieter. In other aspects, this lens photography shortest distance 45cm, maximum photographic magnification is 1:7.4, filter size of 82mm, weight 520 grams. The mount is compatible with Canon, Nikon, Sony, Pentax. images with exaggerated perspective with its wide angle view from 102.4o.

Image quality

In the sharpness, the lens have the outstanding performance, distortion effect is not obvious.

Summary

We know, for the digital SLR camera lens, the constant aperture is an important indicator. Smaller than the large aperture lens aperture lenses have better optical quality, grade higher. In addition, the “constant aperture lens” is also seen as a symbol of luxury. Sigma 10-20mm f/3.5 EX DC HSM as a constant aperture ultrasonic head and mount a HSM focusing motor, which for the SLR lens, it is an advantage, So I would like to recommend you Sigma 10-20mm f/3.5 EX DC HSM.

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