A new patent filed by Canon Japan shows multiple optical formulas for an RF 50mm f/1.4 and f/1.8 design as well as a new RF 35mm f/1.4. The patents deal with increasing focusing speed when using lenses with large diameter elements. All the designs filed use a modern optical design for the front and rear […]
A new patent filed by Canon Japan shows multiple optical formulas for an RF 50mm f/1.4 and f/1.8 design as well as a new RF 35mm f/1.4. The patents deal with increasing focusing speed when using lenses with large diameter elements. All the designs filed use a modern optical design for the front and rear […]
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