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A patent for a zoom range smaller super telephoto has emerged. The optical formula is for an EF 200-600mm f/4.5-5.6 IS. We’ve heard in the past that Canon was working on slower super telephoto lens, and a zoom makes a lot of sense.
Patent Publication No. 2015-212724
- Published 2015.11.26
- Filing date 2014.5.1
- Zoom ratio 3.00
- 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
Canon does need a slower 600mm option in their lineup, as Tamron and Sigma continue to sell a lot of them.