Canon Patent Application: Canon Mirrorless kit lenses
Canon has published an application describing quite a few kit lenses. These are mostly image circle compromised lenses, and would be near the cheaper end of the spectrum in terms of image quality.
Usually when you see the Image height under 13.66 for APS-C and under 21.64 for full frame, there's some funky magic happening to get that lens to fill the frame. All of this of course, reduces your absolute resolving power of the lens. This is okay for kit lenses where you want to prioritize size, weight, and cost over optical quality.
The lens list is pretty average, the novel one is the APS-C. It appears to be more for the RF mount than the EOS-M mount, however, it's an "afterthought" embodiment to a patent application primarily dealing with abberations on kit lenses.
Canon RF Full frame 24-70 F4
focal length 24.72 44.11 67.90
F number 4.12 4.12 4.12
Half angle of view 41.50 26.13 17.30
Image height 19.69 21.64 21.64
Lens total length 101.50 114.91 141.15
BF 12.50 17.92 24.86
Canon RF Full frame 24-120 F4-7.1
Focal length 24.72 73.51 116.40
F number 4.04 5.99 7.31
Half angle of view 41.80 16.40 10.30
Image height 19.90 21.64 21.64
Lens total length 109.01 131.75 159.02
BF 14.15 27.66 31.01
Canon RF 24-100 F4-7.1
focal length 24.72 67.42 101.85
F number 4.29 6.16 7.31
Half angle of view 41.80 17.79 11.80
Image height 19.90 21.64 21.64
Lens total length 107.52 130.63 158.03
BF 13.48 31.00 35.52
Canon RF Full frame 24-80 F4-7.1
Focus distance 24.72 47.47 82.45
F number 3.53 4.79 5.88
Half angle of view 38.53 24.50 14.70
Image height 19.69 21.64 21.64
Lens total length 101.50 116.56 142.50
BF 14.16 25.46 32.52
APS-C 15-70 F4-7.1
focus distance 15.45 37.46 67.90
F number 3.93 5.64 7.31
Half angle of view 42.40 20.02 11.37
Image height 12.56 13.65 13.65
Lens total length 71.26 88.06 113.36
BF 12.40 22.39 24.51
Japan Patent Application 2020-170102
3624
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