"> 4mm 8mm 18mm 24mm 35mm 50mm 85mm 135mm 200mm 300mm 600mm 1000mm 1:1 1:1.4 1:2 1:2.8 1:4 1:5.6 1:8 1:11 Sigma 16mm F1.4 DC DN | Contemporary Sigma 19mm F2.8 DN Sigma 30mm F2.8 DN Sigma 30mm F1.4 DC DN | Contemporary Sigma 56mm F1.4 DC DN | Contemporary Sigma 60mm F2.8 DN