Patent: Canon RF 130mm f/1.4L USM and other fast primes
Keith at Northlight has uncovered a patent showing optical formulas for three…
Patent: Canon RF 135mm f/1.4L USM
Well here's a fun optical formula from Canon discovered by Canon News,…
Is an RF 135mm f/1.4L USM in development? [CR1]
A couple of days ago we posted about an RF 14-21mm f/1.4L…
