A little bit about Canon photo technique
I was looking for articles about the mineral fluorite from which lenses are made.
I got quite interesting PDFs on the official Canon website
EF lens concept
Achievements of Canon
EF lenses with fixed focal lengths
EF lenses zoom
lenses EF lenses EF lenses EF-S
lenses Accessories for EF lenses
General information on interchangeable lenses
Photo
technology EF lens technology
Optical terminology
EF Lens Specifications
I got quite interesting PDFs on the official Canon website
EF lens concept
Achievements of Canon
EF lenses with fixed focal lengths
EF lenses zoom
lenses EF lenses EF lenses EF-S
lenses Accessories for EF lenses
General information on interchangeable lenses
Photo
technology EF lens technology
Optical terminology
EF Lens Specifications