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Canon Patent Applicaton: RF Macro Lenses
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Canon Patent Applicaton: RF Macro Lenses

In this patent application, Canon describes a series of macro lenses of fairly long focal lengths.  Some of the lenses would double as a prime and also a .5x macro which would be certainly useful, especially with a higher megapixel camera where you have more freedom to crop.

This patent application according to canon has the goals of;

To provide an optical system capable of expanding a close range in a small size while suppressing the number of focus groups, and an image pickup apparatus having the same.

Canon RF 135mm F2.0 .5x Macro

Focal length [mm]      133.00
Fno                      2.05
Half angle of view [°]   9.24
Image height [mm]       21.64

Canon RF 200mm F2.4 .5x Macro

Focal length [mm]      200.00
Fno                      2.40
Half angle of view [°]   6.18
Image height [mm]       21.64 

Canon RF 200mm F2.8 1x Macro

Focal length [mm]      199.90
Fno                      2.80
Half angle of view [°]   6.18
Image height [mm]       21.64

Japan Patent Application 2022-022595

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