Sigma 12-24mm f/4 DG HSM A (Nikon) lens review

  The 12-24mm ultra-wide to standard-wide focal length, and promise of excellent performance with edge-to-edge sharpness, make the Sigma 12-24mm f/4 A an attractive option for high-resolution Nikon D750 and D800 shooters looking for an affordable wide-angle zoom for landscape, architectural, or interiors photography. Other features include Sigma’s HSM autofocus motor with full-time manual focus override, a 24cm minimum focus distance for closeup photography, and compatibility with Sigma’s USB dock for updating firmware and fine-tuning focus parameters. Although specifically designed for full-frame cameras, the Sigma 12-24mm f/4 A remains compatible with Nikon APS-C DSLRs, where it offers an equivalent 24-36mm focal length. While