Sigma 17-70mm f/2.8-4.5 DC

This camera glass has a good build quality and is made of high-quality glass elements. The lens coating reduces reflections and glare, resulting in clear and sharp images. The lens has a versatile focal length range suitable for a wide range of photography genres. The autofocus system is fast and accurate, making it easy to capture sharp images. The lens also has a manual focus option for more precise control over focus. The bokeh, or the quality of the out-of-focus areas, is pleasing and adds depth to the images. The resolution of this photographic lens is good, producing sharp and detailed images. The manufacturing time is not specified but it is a popular lens that has been available for several years. Alternatives to this lens include other zoom lenses with similar focal length ranges and aperture values. Overall, this lens is a good choice for photographers looking for a versatile and high-quality lens for their aps-c camera.

Positives:
– Takes beautiful sharp images.
– Great for both photography and video.
– Works well with Canon EOS system.
– Comes with image stabilization feature.
– Good value for money.

Negatives:
– Discontinued by Sigma.
– Autofocus not as fast as native Sony lenses.
– May require the appropriate adapter for use with other camera systems.

Conclusion:
The Sigma 17-70mm f/2.8-4.5 DC camera lens is a great addition to any lens collection. It captures sharp images with beautiful colors and works perfectly for both photography and video. The lens is a perfect fit for Canon EOS system cameras and works well with other DSLR or mirrorless camera systems with the appropriate adapter. Although the autofocus is not as fast as native Sony lenses, it still performs decently with a smart adapter. Overall, the Sigma 17-70mm f/2.8-4.5 DC camera lens is an excellent choice for anyone looking for a reliable, versatile, and affordable lens for their Canon or Sony camera.

Optical design

Bright lens thanks to the high aperture value Full frame equivalent focal length is 25.5-105.0 mm. Has 7 aperture blades, mid-grade lenses usually have this amount of blades. Having rounded blades provides out of focus circle shape closer to a circle.

Physical characteristics

Weights 455 grams so plan ahead, carry only if really necessary. With a lens filter diameter of 72 mm you are one step from the next standard filter size, buy step-up ring and bigger filter but you can chose from plenty options. 82 mm long, requires consideration if you want to carry in the camera bag.