Sigma DC A 18-35mm f/1.8 HSM

This camera glass has a high build quality with excellent resolution. It has 17 lens elements in 12 groups, which is quite a lot, and it is coated with a special material to reduce ghosting and flaring. The aperture of f/1.8 allows for a lot of light to enter the lens, making it great for low light photography. It is a great alternative to other lenses in its category, and it can be used for a variety of photography genres. It is a great photographic lens for those who want to capture sharp and clear images with a beautiful bokeh effect. The lens is manufactured with precision and care, which can be seen in its overall performance. It can be used with both autofocus and manual focus, giving the photographer more control over their shots.

Positives:
– The Sigma 18-35mm f/1.8 is incredibly sharp, especially in the center of the frame at all focal lengths.
– It also offers a very useable range, perfect for everyday photography needs.
– The lens has a fast 1.8 maximum aperture, which is great for low-light situations and for creating a shallow depth of field.
– The autofocus on this lens is fast and quiet, making it ideal for event and street photography.

Negatives:
– The Sigma 18-35mm is a bit on the heavy side, weighing in at almost 800g.
– The lens is also quite large, so it might not be the most portable option for photographers who like to travel light.
– There have been some reports of autofocus inconsistency, although I personally have not experienced this issue.

Conclusion:
Overall, the Sigma DC A 18-35mm f/1.8 HSM camera lens is an impressive performer, with excellent sharpness, fast autofocus, and a useful focal range. The lens is certainly heavier and larger than some other options, but this is a trade-off many photographers are willing to make in exchange for its image quality. If you’re in the market for a high-quality zoom lens with a fast maximum aperture, the Sigma 18-35mm f/1.8 is definitely worth considering.

Optical design

Full frame equivalent focal length is 27.0-52.5 mm. Wide open, subjects located outside the depth of field are shown very blurred. Has 9 aperture blades, with this amount of aperture blades you will be satisfied with the result. It is a ring-type ultrasonic motor designed to provide quick and silent focusing.

Physical characteristics

121 mm long, requires consideration if you want to carry in the camera bag. Weights 810 grams so it is a heavy lens, consider using its own lens bag. 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.