Canon filed for a EF 200-600mm f/4.5-5.6L USM full frame DSLR zoom lens patent (#2015-212724) in Japan:
- Zoom ratio: 3x
- Focal length: 200.00 340.00 600.00
- F-number: 4.60 4.60 5.20
- Angle of view: 6.18 3.64 2.07
- Image height: 21.65 21.65 21.65
- Overall length of the lens: 355.16 355.16 355.16
- BF: 65.16 65.16 65.16