Canon Patent Application: Consumer Grade Primes for the RF mount

This patent application has a series of small primes of moderate aperture, which we all need. However all the lenses are under the image circle size for full frame. So I would presume these lenses are for full frame image circle and software stretched to fit.  

As Canon states;

To provide an optical system having good optical performance, easy to manufacture, and compact

I would suspect these lenses if they were ever made would be all under $300, and even then I'm not sure I'd even buy them.  However, small and light primes, even if you are slightly resolution disadvantaged would have their uses. However, personally, I don't like this trend.

Canon RF 28mm F1.8

Focal length             28.60  
F number                  1.85  
Half angle of view       37.10  
Image height             20.15  
Optical total length     81.00  
BF                       13.20  

Canon RF 20mm F1.8

focal length             20.60  
F number                  1.85  
and a half Angle of view 46.40
Image height             18.71 
Optical total length     84.87  
BF                       11.00 

Canon RF 24mm F1.8

focal length             24.72  
F number                  1.85  
and a half Angle of view 41.20
Image height             19.34  
Optical total length     81.00  
BF                       11.00

Japan Patent Application 2022-020096

Richard CanonNewsRichard CanonNews

Richard has been using Canon cameras since the 1990s, with his first being the now legendary EOS-3. Since then, Richard has continued to use Canon cameras and now focuses mostly on infrared photography. Richard is the founder and editor of CanonNews since 2017, and has worked as a writer on CanonRumors and other websites in the past.

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