New Sigma patent discloses the 28-70mm f/2.0 specs for full frame mirrorless!
Today Asobinet spotted a ton of new Sigma patents. Here are the lenses: 28-70mm f/2.0 for full frame mirrorless sytems 14-30mm f/4.0 for full frame mirrorless sytems 20mm f/1.4 for…