
Sigma issued an advisory about using their 20mm f/1.4 DG HSM Art, 35mm f/1.4 DG HSM Art and 85mm f/1.4 EX DG HSM lenses with the Canon 1D X Mark II DSLR camera – the exposure of the image may not be accurate. Sigma is working on a firmware update to correct the issue. Here are the details:














