A patent for an optical formula showing a wide angle zoom lens for a full frame mirrorless body has appeared. It looks like this patent is for a 16-30mm f/2.8 and has a short backfocus of 11.34mm, which tells us it’s not for a DSLR. Canon 16-30mm f/2.8 Specifications: (Japan Patent Application 2018-077320) Zoom ratio: 1.67 Read more......
Published By: Canonrumors - Sunday, 20 May, 2018