Sigma 50mm 1.4 canon rf July 8, 2019 16 32 64 128 Sigma 50mm 1.4 art canon rf Sigma 50mm 1.4 art vs canon rf 50mm 1.8 Sigma 50mm 1.4 art vs canon rf 50mm 1.2 Canon ef 50mm f/1.8 stm lens
