Close
Canon Patent Application: Some Curious RF Consumer Super-Zooms
CanonNews
/ Categories: Canon Patents

Canon Patent Application: Some Curious RF Consumer Super-Zooms

We have discovered a curious patent application, while I think that this really is about the 100-500mm F4.5-7.1L IS USM, I do think that some of these other designs may have merit. While the speeds are slow, consider that to get anywhere close to some of these extended focal ranges requires extenders for mere mortals, and if so, the aperture range isn't that bad then.

Canon RF 80-400mm F4-6.3

Focal length       82.24 199.92 395.00   
F number            4.10   5.13   6.40   
Half angle of view 14.74   6.18   3.14   
Image height       21.64  21.64  21.64   
Total lens length 204.12 265.26 294.22   
BF                 21.72  43.37  68.86   

Canon RF 120-600mm F4.5-7.3

Focal length      120.00 300.00 590.00
F number            4.60   5.67   7.20
Half angle of view 10.22   4.12   2.10
Image height       21.64  21.64  21.64
Lens length       240.18 308.74 335.29
BF                 15.00  36.91  73.64

Canon RF 200-800mm F6-8.5

Focal length      199.97 399.99 784.76   
F-number            6.00   6.80   8.50   
Half angle          6.17   3.10   1.58   
Image height       21.64  21.64  21.64   
total lens length 285.44 355.65 385.65   
BF                 22.57  43.72  83.86   

Japan Patent Application 2020-118816

Print
4320
blog comments powered by Disqus

Keep In Touch

FacebookTwitterLinkedIn

Our Sponsors

Want to buy me a coffee?

Free Shipping to the USA and Canada*

Use CANONNEWS for $10 off AuroraHDR

Use CANONNEWS for $10 off Luminar

*Conditions may apply

 

CanonNews is not affiliated with Canon Inc. or any of their subsidiaries.

EOS Mirrorless Reviews is not affiliated with Canon Inc. or any of their subsidiaries.

Terms Of UsePrivacy Statement© 2024 by CanonNews. This site is not affiliated with Canon Inc. or it's subsidiaries.
Back To Top