Patent: Very small large aperture zoom lens optical formulas
Canon has published a pretty interesting optical design patent for large aperture zoom lenses. The two designs in this patent are pretty interesting. Canon's goal in this patent To provide a zoom lens...
View ArticleCanon RF 28-70mm f/2L USM II mentioned [CR2]
Canon's “look what we can do” zoom, the RF 28-70mm f/2L USM is about as highly regarded as any standard zoom lens in history of consumer optics. We have been told that a sequel for the RF 28-70mm f/2L...
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