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Canon has always delivered great bang for the buck lenses on top of the fabulous L lenses that we enjoy, so it's no surprise that we see a new patent application dealing with the lower end of the spectrum.
When I first read the patent application (2024-072459), I *assumed* that it was Canon looking at future models of the Canon RF 15-30mm f/4.5-6.3 IS STM and the Canon RF 24-50mm F4.5-6.3 IS STM.
But then I took a closer look at the angle of view. The angle of view listed in the embodiments is the 1/2 angle of the diagonal. So in the case of the 14-30mm lens, that's 86.8 degrees on the diagonal, which for 14mm makes this a crop lens or RF-S lens. For the embodiment of the 20-50mm lens, the half angle of view in the embodiment of 46.4 or the full diagonal of 92.8 degrees. This matches up to the full frame angle of view. Canon was a bit sneaky when it came to this patent application. I have never seen them mix crop lenses and full-frame lenses without mentioning the image height which is usually the indicator of a full frame or APS-C lens.
Canon RF-S 14-30mm F4-6.3 STM
Wide Angle Medium Telephoto
Length 14.40 20.07 29.10
F-number 4.10 5.05 6.40
angle of view 43.40 31.70 25.10
Lens length 75.06 75.06 75.06
BF 11.78 11.78 11.78
Canon RF-S 12-30mm F4-6.3 STM
Wide Angle Medium Telephoto
length 12.40 18.70 29.10
F-number 4.10 5.13 6.40
Half angle (°) 47.90 34.50 25.20
Lens length 82.67 82.67 82.67
BF 11.71 11.71 11.71
Canon RF 20-50mm F4-5.6 STM
Wide Angle Medium Telephoto
length 12.40 18.70 29.10
Focal length 20.60 31.11 48.50
F-number 4.10 5.20 5.88
Half angle (°) 46.40 33.20 24.20
Lens length 106.52 106.52 106.52
BF 19.41 19.41 19.41
As with all patent applications, this is a glimpse into Canon's ongoing research and may or may not end up in a future product.
Source: Japan Patent Application 2024-072459
Maybe I should look closer at the 15-30, even though I‘m not really good at UWA composition 😉
I wish for a 24-70 f/4!
Any of the later M's (but especially the M6MkII), when attached to the EF-M 11-22...served (and still serves) as an essential travel tool. Its combination of volume, mass and capabilities remains unsurpassed.
With an EF-M 18-150 on my belt, I'm all set.
I remain flabbergasted...