Canon Patent Application: Canon RF 50mm F1.8, RF 28mm 1.8

Canon Patent Application: Canon RF 50mm F1.8, RF 28mm 1.8

Buried in the RF 35mm 1.8 patent application is two more lenses that have a very high degree of chance of being made

This patent application also contains the 50mm 1.8 and the 28mm 1.8 lenses.  Both of these lenses are for the RF mount as the back focus (BF) is around 20mm or under.  The 28mm, shows a real significant ingress into the lens mount.  While this is possible, it may not be practical.

Also to note, both of these lenses are 1:2 IS macro lenses, which makes this a really nice trinity of lenses (28,35,50) all F1.8 image stabilized, and also with a great minimum focus distance.

Focal length 48.50
F-number 1.85
Half angle of view (degrees) 24.04
Image height 21.64
Total lens length 95.00 
BF 15.80

Focal length 28.80
F-number 1.85
Half angle of view (degrees) 36.91
Image height 21.64
Total lens length 80.30 
BF 7.00 

US Patent Application 20190113711

Categories: Patents
Rate this article:
No rating
Print

Please login or register to post comments.

Top Reviews

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