We've been waiting patiently for more lenses, and today we have a few hints of what Canon has planned for the wide and fast. In our previous story, we told you about a Canon patent for fast and wide primes. This story is all about fast and wide zooms like the 16-24mm /2.8.
Patent P2023-104025 has embodiments for an RF 8-15mm f/4L USM and the RF 16-24mm f/4L USM. While the RF 16-24mm f/4L USM may not seem to make sense, if Canon is able to reduce the weight, size and price compared to the 25-35mm f/2.8, it could make sense
Example1: Canon RF 8-15mm f/4L USM
- Focal length: 8.56mm – 14.42mm
- F-number: 4.12
- Half angle of view: 52.47° – 56.32°
- Height: 11.15mm – 21.64mm
- Length Overall: 119.70mm
- Back Focus: 22.47mm – 34.96mm

Example 2: Canon RF 16-24mm f/4L USM
- Focal length: 16.00mm – 24.00mm
- F-number: 4.12
- Half angle of view: 53.52° – 42.03°
- Height: 21.64mm
- Length Overall: 118.86mm
- Back Focus: 23.30mm – 37.54mm
