Sigma constant f/2.8 with HSM AF for APS-C, the most impactful kit lens upgrade at budget pricing.
The Sigma 17-50mm f/2.8 EX DC HSM is a fast standard zoom for APS-C cameras — constant f/2.8 aperture across the standard zoom range. Available in multiple mounts.
17-50mm focal length. f/2.8 constant maximum aperture. EX class. DC = APS-C coverage. HSM autofocus. Multiple mount options.
The Sigma 17-50mm f/2.8 EX DC is a popular APS-C fast standard zoom — constant f/2.8 provides consistent exposure and subject separation across the range. EX class provides above-average optical quality. Comparable to 24-70mm f/2.8 equivalent reach on APS-C.
On the used market the Sigma 17-50mm f/2.8 EX DC is a capable fast APS-C zoom. Condition checks: constant f/2.8 elements, HSM motor, zoom. Verify mount variant.