Patent: Lots of optical formula lens patents for the EF mount


Jan 5, 2016
I don't know how many of these will come to fruition (or how much they'd cost), but I like the way they're going on the fast ultra-wide.
14/1.8 - Wow!
22/1.2 - Wow!

Edit - just noticed that these are EF mount. Might be more defensive patents than anything - that is, Canon locks up the formula so that nobody else can use it.
Sigma already makes a 14mm f/1.8 for EF mount. It got good good reviews, including for astro, and is only 75% the price of Canon's EF 14mm f/2.8

If I wanted to buy a 14mm prime, I'd buy either the Samyang SP 14mm f/2.4 or Sigma 14mm f/1.8 Art, the Canon EF 14mm f/2.8L wouldn't even be on the list. Which is why I think Canon might (not will, just might) turn this patent into a fast ultra wide lens.

[I don't shoot astro, so I bought the EF 11-24mm f/4L]
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I'm New Here
Dec 24, 2017
Alpine, Ut
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I was one of the anti-electronic viewfinder folks because of my experience looking through a Sony EVF. It wasn't until I was shown the EOS R that I began to change my mind. I finally bit the bullet and invested in the R. My main reason is the RF lenses. They are so much better than the EF. As much as I love an optical viewfinder I have discovered advantages to the EVF. Focus peaking is a big one. I spent a day in Southern Utah shooting landscapes with my new R and found I didn't ever put the lenses in autofocus. By using manual in conjunction with focus peaking I could visually see my depth of field. I do get that it is not a sports camera although I got good tracking results chasing a large steam locomotive recently. As for battery life - I haven't seen a problem yet. On the Utah trip I swapped a battery out before going into a slot canyon just because I wasn't familiar with the battery life and I didn't want to carry any weight I did need to. I'm looking forward to the high res version although 30mps is no slouch!