In this patent application (2024-025100), Canon describes the optical formulas of some pretty impressive zoom lenses.
In this patent, we see the impressive Canon RF 24-105 F2.8L IS USM Z embodiment, and it's just as impressive as the lens is in real life.
So we know that at least one zoom in this patent application became a reality. But it's the other zoom that is especially interesting to me in this embodiment. The 15-60mm would certainly have me selling a kidney to acquire it, as I can pretty much state that this is around 80% of my images are captured in this range on a crop camera. The image height isn't given, but the half angle of view of this lens makes it an APS-C lens, and not a full-frame lens. The half angle of view for a full frame of a 15mm wide angle would be around 58 degrees. This translates into a 24-100mm lens (approximately) for APS-C shooters.
Canon RF-S 15-60mm F2.8 IS USM Z
Wide-Angle Intermediate Telephoto Focal Length 15.45 30.00 58.20 F-Number 2.90 2.90 2.90 Half Angle of View 41.48 24.48 13.21 Lens Length 143.99 143.99 143.99 Back Focus 11.90 11.90 11.90
As with all patent applications, this is a look into Canon's research and may not be an embodiment that makes it into an additional product. But this gives us a look into Canon's research.
Japan Patent Application 2024-025100
around 120mm in length, not that bad IMO
May be the same 24-105mm size.
But I am sure, most won't like the price of it.
Finally a Lens that would fit perfect at R7 for Portrait (with APS-C). Nearly like a 24-100 at Full Format.