Patent: Ultra-wide zoom lenses for the RF mount, including an RF 9-24mm f/4

Keith at Northlight Images has uncovered a USPTO patent that shows off optical formulas for ultra-wide-angle zoom lenses for the Canon RF mount. USPTO Patent Read more... The post Patent: Ultra-wide zoom lenses for the RF mount, including an RF 9-24mm f/4 appeared first on Canon Rumors - Your best source for Canon rumors, leaks and gossip....