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Patent: Canon RF 120-700mm f/4.5-8 optical formula
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 Read more...
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 Read more...