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. . . . canonrumors.com
2018-5-21 19:00