I have already reported that various manufacturers are expected to announce several new lenses in September. Sigma is rumored to introduce a new 28-105mm f/2.8 ART full-frame lens for Sony E and Leica L mount. The lens is rumored to be less than 1kg and an 82mm filter size: Sigma 28-105mm f/2.8 Art Coming in September … Continue reading Sigma is rumored to announce a new 28-105mm f/2.8 lens in September