[icecap12]

In fact, Canon is going after third party lens manufacturers that are blatantly violating its patent [0].

One of the problems Canon has faced recently is a flooding of the market with super cheap lenses (we're talking 50-200 dollars for total junk). The people that are buying them are justifiably upset when the photos are crap because they incorrectly think its a camera problem. Hey, a lens is a lens, right?

Anyhow, there's wide speculation that Canon will license to the quality quality third-party makers at some point [1][2].

[0] https://petapixel.com/2022/09/06/canon-confirms-its-going-af... [1] https://www.canonrumors.com/forum/threads/sigma-to-make-a-ma... [2] https://www.canonrumors.com/forum/threads/the-state-of-third...

[stevev]

Bad products is not a reason close specs. Unless you are heavily vested into Canon’s lense ecosystem, or have no issues with money, it makes no sense to go with them; if we’re considering full frames. Glass prices are overly marked up by the body creators and quality is subjective when there’s Sigma.

[Zak]

Do you have a link to the patents in question? Articles I've seen about this are not clear about what is patented and I'm suspicious about whether it would pass a novelty/obviousness test.