Patent: Very small large aperture zoom lens optical formulas

mdcmdcmdc

R7 (preordered!), 7Dii, M5, 100 (film), α6400
CR Pro
Sep 4, 2020
213
316
Your math is wrong. The diameter of the FF image circle is ~43.2mm, and the image height for a FF image circle is ~21.6mm (not coincidentally, the image height at the longer focal lengths of the lenses in these patents is 21.64mm).
My math was right, it’s my typing that was wrong! 21.6 mm, agreed.
 
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t.linn

EOS R5
Jan 12, 2011
186
63
Oregon - USA
www.tlinn.com
So why is this important to the average consumer? Not as if someone is going to manufacture or 3D a lens. Besides it is one of hundreds if not thousands of Canon patents.
If you dislike rumors, perhaps you should not visit rumor sites. This stuff doesn't have to be important. It is okay if it is simply interesting.
 
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neuroanatomist

I post too Much on Here!!
CR Pro
Jul 21, 2010
27,117
6,545
If you dislike rumors, perhaps you should not visit rumor sites. This stuff doesn't have to be important. It is okay if it is simply interesting.
He would rather visit CanonRuMErs, the site where only rumors you personally care about are posted.
 
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yungfat

EOS 90D
Feb 16, 2013
135
54
There’s always a trade off when bringing camera for vacation, weather sealed and large aperture lens I si going to be heavy and huge, really hope canon can come out something light with large aperture and weather sealed lens.