Canon Patent: RF 200mm f/2 IS Lens For EOS R System

And here we have another Canon patent published today.

Canon patent application 2023099385 (Japan, published 7/13/2023) discusses optical formulas for a RF 200mm f/2 IS lens.

From the patent literature:

To provide an optical system having a plurality of focusing groups and anti-vibration groups that can be made compact and lightweight in addition to excellent optical performance.

Description of the Related Art

In a telephoto lens equipped with a plurality of focusing groups that move during focusing from infinity to the closest object and a vibration reduction group for correcting image blur, in addition to good optical performance, There is a demand for miniaturization and weight reduction of the entire lens system.
The present invention provides an optical system having a plurality of focusing groups and anti-vibration groups, which can be reduced in size and weight in addition to excellent optical performance.

Example 1

• Focal length: 195.00
• F-value: 2.05
• Half angle of view: 6.33
• Image height: 21.64
• Overall length: 184.49
• Back focus: 22.35

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