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Canon Patent: RF 50mm f/1.4 and RF 35mm f/1.4 Lenses For EOS R

Canon Patent
Image from the patent literature

Another Canon patent dealing with lenses for the RF mount, i.e. for Canon’s full frame mirrorless system EOS R.

Canon patent application 2020-181071 (Japan) discusses optical formulas for an RF 50mm F1.4 and an RF 35mm f/1.4 lens. This patent application is particularly interesting since 50mm f/1.4 and 35mm f/1.4 are two very classic lenses for a full frame system.

The patent application seems to reveal a modern and complex optical design with front and rear lenses for optical correction. Moreover, we think it has internal focusing, a small size and a very fast auto-focus. Another two lenses that might go into production.

Example 1Example 2Example 3
Focal length51.5048.4748.49
F value1.451.451.85
Half angle of view22.7924.0524.04
Image height21.6421.6421.64
full length95.19108.8491.98
BF11.4911.3911.48
Example 4Example 5
Focal length48.4933.99
F value1.451.45
Half angle of view24.0432.48
Image height21.6421.64
full length116.56131.16
BF13.2312.05

More Canon patent applications are listed here.

[via asobinet.com]

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