The Sigma 30mm F1.4 DC HSM Art ($499) is a standard-angle prime lens for APS-C cameras. It's one of the rare SLR lenses in this focal range that's dedicated to that sensor format, and the only one with an f/1.4 aperture. Nikon, Sony, and Pentax all offer more affordable options with maximum apertures that range from f/1.8 to f/2.4, but the Sigma 30mm is available as a faster option for all of those mounts, and is also available in versions for Canon and Sigma SLRs. The lens is just a little soft when shot wide open, which prevents it from getting top marks, but it's a solid option for APS-C shooters. If you're not willing to compromise on image quality in this focal length range, another Sigma lens is the way to go. Our Editors' Choice Sigma 35mm F1.4 DG HSM ($679.95 at Amazon) is a lot bigger and heavier, but it's deadly sharp at f/1.4 and works with both APS-C and full-frame cameras. The 30mm is part of Sigma's Art series, which is the category that the company is using for al...
The Sigma 30mm F1.4 DC HSM is a solid option for APS-C photographers who want a standard-angle prime with an f/1.4 aperture, but it's a little pricey compared with f/1.8 lenses.
Compact; Opens to f/1.4; Very sharp when stopped down; 0.3-meter close focus; Sturdy build
Some edge softness at wide apertures; Modest barrel distortion; Lacks optical stabilization; Pricey