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Author Topic: f2 2x zooms  (Read 3381 times)

Tijn

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Re: f2 2x zooms
« Reply #15 on: January 27, 2012, 07:33:25 AM »
Wasn't there a rumour because of a17-55 f/2 patent somewhere in 2010, as well?

Of course we haven't seen it arrive, but this wouldn't be the first >2x zoom they're looking at for f/2.
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Re: f2 2x zooms
« Reply #15 on: January 27, 2012, 07:33:25 AM »

ferdi

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Re: f2 2x zooms
« Reply #16 on: January 27, 2012, 08:17:21 AM »
Quote from: Tijn on January 27, 2012, 07:33:25 AM
Wasn't there a rumour because of a17-55 f/2 patent somewhere in 2010, as well?


That's right: Canon EF-S 17-55 f/2 IS Patent.
I checked ip.com but unfortunately it doesn't provide any more info on the patent.
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funkboy

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Re: f2 2x zooms
« Reply #17 on: January 27, 2012, 08:42:30 AM »
Egami is usually the place to look for patents.  Here's a link to the f/1.8 and f/2.0 17-55 patents..

Plenty of other tasty stuff in their archives, notably this one for several fast wide primes & zooms, and this 16-35 f/2-2.8.
« Last Edit: January 27, 2012, 08:46:12 AM by funkboy »
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Re: f2 2x zooms
« Reply #17 on: January 27, 2012, 08:42:30 AM »
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