Sigma 12-24mm f/4.5-5.6 II DG HSM - Sigma SA, Canon EF, Nikon F, Sony A Mount

The Sigma 12-24mm f/4.5-5.6 II DG HSM is a second-generation ultra-wide-angle zoom designed for full-frame digital SLRs. It is notable for its extremely wide 12mm starting focal length and rectilinear design, which keeps straight lines from curving at the edges. The optical design incorporates FLD and SLD glass elements to minimise chromatic aberration. It is a popular choice for interior and landscape photographers requiring the widest possible perspective. Used examples should be checked carefully for decentring, which can cause softness on one side of the frame—a common issue in complex wide-angle zooms. SDS verifies the zoom and focus rings operate smoothly without grit. Due to the protruding front element, the condition of the glass and the integrated hood is paramount. We also ensure the HSM autofocus is quiet and accurate across the zoom range.