Sigma 24mm F1.4 DG HSM | A Canon EF review: Better by design
Introduction Independent lens maker Sigma won plaudits for the optical qualities and accessible pricing of its high-speed 35mm and 50mm f1.4 DG HSM Art full-frame models, and now the Japan-based manufacturer has added a highly-anticipated ultra-wide model to the range. Externally, the 24mm f1.4 DG HSM A resembles its siblings, with a matte finish exterior and finely-ribbed focusing ring. It is a big lens, too, with a 77mm filter thread and 15 elements in 11 groups, three of those from FLD glass that’s said to possess similar optical characteristics to fluorite, and a further three made
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