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Northlight has uncovered a patent showing optical formulas for more super-telephoto zoom lenses for the RF mount. The Canon RF 100-500mm f/4.5-7.1L IS USM will be officially announced soon, but does Canon have plans for an even longer zoom lens for the EOS R system?
Canon RF 100-600mm f/4.5-7.1
- Focal Length: 103mm – 248mm – 600mm
- F-Number: 4.6 – 5.8 – 6.8
- Half Angle of View: 11.86° – 4.98° – 2.07°
- Image Height: 21.64mm – 21.64mm – 21.64mm
- Lens Length: 241mm – 305mm – 331mm
- Backfocus: 17mm – 37mm – 97mm
Canon RF 120-700mm f/4.5-8
- Focal Length: 123mm – 293mm – 700mm
- F-Number: 4.6 – 5.8 – 8.0
- Half Angle of View: 9.98° – 4.22° – 1.77°
- Image Height: 21.64mm – 21.64mm – 21.64mm
- Lens Length: 246mm – 322mm – 370mm
- Backfocus: 14mm – 44mm – 107mm
