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Canon Patent Application: Canon RF 8-15mm F4.0 Fisheye
/ Categories: Canon Patents
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Canon Patent Application: Canon RF 8-15mm F4.0 Fisheye

One of Canon's more unique lenses for the EF mount is the Canon EF 8-15mm Zoom fisheye lens.  It appears that Canon feels it should be repeated on the RF mount as well.

This patent application describes a fisheye lens with a zoom from 8mm to 15mm.  With a distinctly short backfocus distance, this is certainly for the mirrorless mount.

One of the embodiments is shown below;

focal length         8.10   11.97   15.07  
F number             4.10    4.10    4.10  
Half angle of view  91.51   90.00   90.32  
Image height        11.50   17.00   21.50  
Lens total length  111.33  107.33  108.91  
BF                  13.13   24.44   31.63  

Japan Patent Application 2020-166234

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