Lots of patents, how many are real products?

Patent Number: 20090180199
EF 35-70 f/2.8 IS
EF 28-70 f/2.8 IS

I posted this a few days ago and removed it because I didn't really understand it.

Patent Number: 20090201585
EF 600 f/4 DO
EF 70-300 f/4.5-5.6
EF 28-35 f/1.6-2.1

Patent Number: 20090284847
EF 14 f/2.8
EF 24 f/2.8
EF 300 f/4 IS
EF 400 f/2.8 IS

As always with patents, I really don't speak their language and a lot can be lost in the translation. I'll keep this posted and let you folks dissect them.

thanks [NL]


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  1. This lens would match up with my 16-35LII, and possibly have better IQ than the 24-70.
    Buying it will depend on the 14-24 if & when it becomes available, and it’s IQ.

  2. Hello,

    You don’t see the revolution in the patent with the news

    400/2.8 LIS NG.Look carefully at the patent:It’s an optical revolution if they release such lenses next year!

  3. The 28-35 reports angles of view as 46.91 degrees at 28.81 mm and 39.91 degrees at 34.43 mm. I didn’t work the math all the way out, but that’s far more consistent with a 1.6 crop factor than a 135 format lens.

  4. dont get to hopeful these lenses (zooms mentioned above) might end up in a powershot.. the s90 has a f2-4something zoom.. its fun to imagine though..

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