As well as expanding their EOS R camera and RF mount lens lineups, Canon still seems to be going pretty hard on the long telephoto lenses for the EF mount. Canon News has discovered a number of US patents alluding to what appears to be the recently released 400mm f/2.8L IS III USM, which stole all of Sony’s “Lightweight” thunder, as well as new 300mm f/2.8, 500mm f/4, and 800mm f/5.6 telephoto lenses.
While no specific product names have been mentioned, the two patents, #US20190041605 and #US20190041606 list several lens specifications.
300mm f/2.8
- Focal length: 294.00
- F-number: 2.91
- Half angle of view (degrees): 4.21
- Image height: 21.64
- Total lens length: 276.40
- BF: 65.35
400mm f/2.8
This is possibly the already-existing 400mm f/2.8L IS III USM, or this is a lens that’s way down the line. Given that the Mark III hasnt’ been out all that long, it’s extremely unlikely that Canon would be looking to replace it so quickly.
- Focal length: 392.00
- F-number: 2.90
- Half angle of view (degrees): 3.16
- Image height: 21.64
- Total lens length: 371.25
- BF: 69.92
500mm f/4
- Focal length: 490.00
- F-number: 4.12
- Half angle of view (degrees): 2.53
- Image height: 21.64
- Total lens length: 410.77
- BF: 66.03
800mm f/5.6
- Focal length: 784.00
- F-number: 5.80
- Half angle of view (degrees): 1.58
- Image height: 21.64
- Total lens length: 484.53
- BF: 75.94
As always, these are just patents. There are no guarantees of new lenses, although some of these are due for a refresh. Given the interest in Canon’s 400mm f/2.8L IS III USM and 600mm f/4L IS III USM, Canon may be looking to complete their lightweight telephoto lineup.
Find out more and see the full patents at the USPTO website.
[via Canon News]
