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Author Topic: Canon EF 24-70 f/2.8L II Patent?  (Read 23713 times)

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Re: Canon EF 24-70 f/2.8L II Patent?
« Reply #30 on: January 22, 2011, 05:05:51 PM »
Canon also patented a 600mm f/5.6 with what appears to be DO optics, but there's no explicit mention of IS, it would be really surprising if a lens like this didn't have IS.

I agree that any 600mm lens that will be produced will have IS.  however, the version patented does not have IS.

Only a very few of a large number of patents make it to production.

Here is a translation of the 600mm DO patent application.

http://www4.ipdl.inpit.go.jp/Tokujitu/PAJdetail.ipdl?N0000=60&N0120=01&N2001=2&N3001=2010-145832

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Re: Canon EF 24-70 f/2.8L II Patent?
« Reply #30 on: January 22, 2011, 05:05:51 PM »