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Canon Patent Application: TS-E 50mm 2.8L Macro
Even though this lens is released, this patent application is clearly for the 50mm TS-E Macro with a very large 33mm image height (66mm diameter image circle).
For those that love the TS-E 50mm, this patent application is for you.
Infinite distance-0.5 time
Focal distance 51.40 50.30
F number 2.88 4.0
a half field angle (degree) -- 33.20 33.20
Image height 33.63 33.63
Whole length of the lens 153.42 178.54
BF 55.96 81.07
Interestingly there was a second embodiment that Canon could have done for this lens, with a 1:1 Macro capability;
Infinite distance-1.1 time
Focal distance 51.40 50.98
F number 2.96 5.40
a half field angle (degree) -- 33.20 33.20
Image height 33.63 33.63
Whole length of the lens 162.94 214.15
BF 55.95 112.14
It also shows that Canon may release a lens before it's actual patent has processed through the patent offices.
Japan Patent Application 2018-106141
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