Canon Patent Application: Canon RF 24-70 2.8, 28-85 2.0-2.8

While it's not newsworthy that Canon will come out with an Canon RF 24-70 2.8L IS USM this year, the patent applications that may be used for this lens are still rather interesting as it shows us the possible size, and also complexity of this lens.

While we don't know exactly what patent applications Canon will use, usually it's a combination of them.  For example, I can't count how many patent applications we've seen for the RF 24-105 lens design.

This patent application also has another lens, a 28-85 2.0-2.8 lens, which would certainly be a novel lens if it was ever produced.

Focal length 24.71 45.70 67.90
F-number 2.88 2.88 2.88
Half angle of view 41.20 25.33 17.67 (degrees)
Image height 21.64 21.64 21.64
Total lens length 148.61 164.05 179.49
BF 17.00 30.55 41.54

Focal length 28.00 53.77 85.00
F-number 2.00 2.60 2.88
Half angle of view 37.69 21.92 14.28 (degrees)
Image height 21.64 21.64 21.64
Total lens length 158.50 176.83 195.16
BF 16.00 28.52 41.05

US Patent Application 20190079269

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