Sigma 28-105mm f/2.8 FE lens will be announced on September 5

Image on top shows the Canon 24-105mm f/2.8 lens (the Sigma will be a tiny bit smaller and lighter) On September 5 Sigma will announce the new 28-105mm f/2.8 Full Frame E-mount lens! Specs: 28-105mm f/2.8 Full Frame ART weight less than 1kg (Canon’s 24-105 mm f/2.8 weighs 1.3 kg) 82mm filter size For Sony…...