Usage: Travel, nature, landscapes, available light, architecture, indoor shots. The 28mm focal length was commonly used during the era of analog cameras and still has many fans today. To meet the demand of many photographers who have expressed a strong interest in using the familiar 28mm focal length in the quality of the Art product line, we have developed the Sigma 28mm F1.4 DG HSM Art. In doing so, we were able to draw on our experience from the development of the previous Art F1.4 prime lens product line. This new classic wide-angle lens, benefiting from the latest design, materials, and manufacturing technologies, is now part of Sigma's Art product line.