The 17mm F4 DG DN from Sigma is a light-weight compact lens with all-metal building, a click-on aperture ring, and considerate design touches like a magnetic lens cap and metallic lens hood. It is both a wide-angle lens for full-frame cameras, or a 25.5mm equal on APS-C fashions. It measures 64mm huge and 49mm lengthy (2.5 x 1.9″) and might focus all the way down to 12cm (4.8″) to provide a magnification ratio of 1:3.6x.

It is not day by day {that a} first 17mm lands on our desk, so we took it to the streets to see the way it performs in the actual world. Try the samples to see the picture high quality for your self.