DXOMark has completed their review of the Sigma 24mm f/1.4 DG Art lens. According to DXO, the Sigma holds up very well against the Canon EF 24mm f/1.4L II, one of my favourite lenses in the Canon lineup.
From DXOMark
Although at first sight the Sigma’s overall DxOMark score might not look as convincing as the two previous Art models from the maker, it is important to look deeper than the numbers suggest, especially at shorter focal lengths. The Sigma 24mm f1.4 DG HSMis the finest 24mm we’ve seen, although against the Canon 24mm f1.4L II USM, it’s a close-run thing. That model has slightly higher peak sharpness centrally at f4-5.6, but the Sigma has more uniform performance overall, including superior control of CA and distortion.
Read the full review at DXOMark | Sigma 24mm f/1.4 Art $849: Adorama | B&H Photo