
Just a week or so ago, I asked whether prime lenses still hold their place in a modern kit. It seems Sigma may have answered that question with the newly announced Sigma 17-40mm f/1.8 DC Art lens.
Bringing a constant large f/1.8 aperture to the 17–40mm zoom range, the lens offers the image quality of a prime with the flexibility of a zoom. Designed for APS-C mirrorless cameras, it’s one of the most compelling lens announcements of the year.