New Patent: Canon RF 28-70mm F2.2-F2.8

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Good News!!! After the new Canon EOS R and four new RF lenses: RF 35mm F1.8 Macro IS STMRF 50mm F1.2L USMRF 28-70mm F2L USM and RF 24-105mm F4L IS USM lens were officially announced, more Canon RF lenses are coming in the next few years. Now, Canon has filed a new patent for another 28-70mm lens. It is much smaller at 155mm compared to the RF 28-70mm f/2L USM at 200mm.

Japan Patent Application 2018-197774:

Focal distance          28.84  44.14  67.90
F number                    2.25   2.62   2.91
a half field angle     36.88  26.11  17.67
Image height            21.64  21.64  21.64
length of the lens   146.94 157.60 175.00
BF                                   20.75  28.77  34.64

Focal distance        28.82  44.24  67.90
F number                   2.27   2.63   2.91
a half field angle     36.90  26.06  17.67
Image height            21.64  21.64  21.64
length of the lens   150.08 159.44 174.76
BF                                   20.56  29.08  35.42

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