What is sigma 18 35 1.8?

Sigma 18-35mm f/1.8 is a popular standard zoom lens, designed for APS-C format DSLR cameras. It is known for its fast maximum aperture of f/1.8, allowing for exceptional low-light performance and shallow depth of field effects. The lens is made up of 17 elements in 12 groups with a minimum focus distance of 28cm. It also has a Hyper Sonic Motor (HSM) for quiet and fast autofocus, a durable brass bayonet mount, and Super Multi-Layer Coating to reduce flare and ghosting. This lens is suitable for a wide range of photography genres such as landscape, travel, portrait, and street photography.