New blog post: https://www.eoshd.com/2018/01/sony-a7r3-users-throw-away-canon-lenses/ A test of several Sigma lenses on the Sigma MC-11 adapter. For comparison I included some Sony E-mount lenses as well. With the MC-11 adapter, the Sigma Canon EF mount lenses (and their own SA mount lenses) use continuous PDAF (phase detect AF) in video mode, just like Dual Pixel AF on a Canon body. This isn't possible with Canon's own lenses or with the Metabones Smart EF adapter. In the test: Sigma 18-35mm F1.8 ART (super 35) Sigma 24-35mm F2.0 ART (full frame) Sigma 20mm F1.4 ART (full frame) Sigma 24-105mm F4 (full frame) Sigma 30mm F1.4 (super 35, e-mount) Also: Zeiss Batis 25mm and 85mm for comparison. Video mode: 4K XAVC-S at 25p, in Hybrid LOG Gamma. Graded to Rec.709 in post. Music: Kevin Andersson - Surround Me ELFL - Neon Raceway