Sigma patented a new 70-200mm f/4.0 lens for Full Frame mirrorless systems

Hi-Lows-Note spotted a new Sigma patent describing the design of a new 70-200mm f/4.0 lens for Full Frame mirrorless systems. Specs: Zoom ratio: 2.68 Focal length: 72.50 118.13 193.95 mm F number: 4.00 3.99 4.00 Angle of view: 33.22 20.36… The post Sigma patented a new 70-200mm f/4.0 lens for Full Frame mirrorless systems appeared first on sonyalpharumors....