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Canon Patent Application: Canon RF 24-70mm Kit lens
One thing I'd love is a nice small kit lens for the RF system. This lens seems to fit the bill as it describes a 24-70mm kit lens with variable aperture.
Unfortunately as with most of Canon's lens patents for the RF mount, making it small comes with a cost, and this cost is wide-angle performance as the lens has to stretch the image circle.
Some of the embodiments are shown below essentially this lens is around 80mm in lenght. Consider that the 24-105 kit lens is 115mm, this is around 35mm smaller in length. So nice and compact.
Canon RF 24-70mm F4-7.3
focal length 24.86 38.85 68.13
F-number 4.12 5.10 7.31
Angle of 38.31 29.11 17.62
Image height 19.64 21.64 21.64
total lens length 102.91 97.95 104.95
BF 13.00 22.13 37.46
Canon RF 28-70mm F4-7.3
Focus distance 28.68 42.81 67.45
F number 4.12 5.25 7.16
Angle 34.41 26.81 17.78
Image height 19.64 21.64 21.64
total lens length 102.53 115.51 105.26
BF 13.00 20.64 36.88
Japan Patent Application 2021-196449
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