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Author Topic: APS-C 11mm f/2 Patent  (Read 11720 times)

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APS-C 11mm f/2 Patent
« on: April 04, 2011, 07:01:44 PM »

 


A patent for a super high performance APS-C lens has been issued. The lens is a 17mm equivalent on a crop camera. It’s said to have super performance.



  • Patent Publication No. 2011-65138

  • Published 2011.3.31

  • Filled 2009.8.17

  • Focal distance f = 11.1mm

  • Fno = 2.0

  • Half angle of view 49.7 deg.

  • Aspherical 3

  • Image height 13.20mm


From Egami


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APS-C 11mm f/2 Patent
« on: April 04, 2011, 07:01:44 PM »

Hillsilly

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Re: EF-S 11mm f/2 Patent
« Reply #1 on: April 04, 2011, 07:10:29 PM »
This will be so cool!  Plus, its good to see Canon taking the EF-S range seriously by adding some key primes.   My only concern is that it looks like being a big, heavy lens.  I sometimes look enviously at the Pentax DX primes and wonder why Canon can't put a similar, compact set of lenses together.
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c.d.embrey

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Re: APS-C 11mm f/2 Patent
« Reply #2 on: April 04, 2011, 08:13:57 PM »
I bought a full frame Nikon body, plus 1 Nikon prime last week. If Canon continues to make EF-S primes like this I'll keep at least one 40D body around to be able to use them. Now when is the 22mm f2.0 (36mm FF equiv.) coming-out?


markd61

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Re: APS-C 11mm f/2 Patent
« Reply #3 on: April 04, 2011, 08:18:28 PM »
What is the item labeled "P" in the drawing? If that is glass it sure seems that this sits very close to the sensor.
Would this be in preparation for their APS-C mirrorless?

Justin

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Re: APS-C 11mm f/2 Patent
« Reply #4 on: April 04, 2011, 08:31:31 PM »
Speculation on top of speculation my friend. But possibly...

I'd guess this is a 18 mm prime ef-s mount lens and the translation here would appear to corroborate that:

http://translate.google.com/translate?js=n&prev=_t&hl=en&ie=UTF-8&layout=2&eotf=1&sl=ja&tl=en&u=http%3A%2F%2Fegami.blog.so-net.ne.jp%2F2011-04-01

What is the item labeled "P" in the drawing? If that is glass it sure seems that this sits very close to the sensor.
Would this be in preparation for their APS-C mirrorless?
« Last Edit: April 04, 2011, 08:33:57 PM by Justin »

J. McCabe

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Re: APS-C 11mm f/2 Patent
« Reply #5 on: April 04, 2011, 08:33:57 PM »
Sounds strange to me. That would be equivalent to 18mm on FF, which is not very popular - AFAIK only Zeiss makes a prime with that focal length.

I would expect Canon to first release more popular focal lengths, e.g. normal (~28mm).

Andreos

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Re: APS-C 11mm f/2 Patent
« Reply #6 on: April 04, 2011, 09:00:46 PM »
The only problem here is this not a 14mm equivalent lens. But 18mm will do; Canon really needs some VERY high quality super-wides for their APS cameras.

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Re: APS-C 11mm f/2 Patent
« Reply #6 on: April 04, 2011, 09:00:46 PM »

kubelik

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Re: APS-C 11mm f/2 Patent
« Reply #7 on: April 04, 2011, 09:15:01 PM »
Sounds strange to me. That would be equivalent to 18mm on FF, which is not very popular - AFAIK only Zeiss makes a prime with that focal length.

I would expect Canon to first release more popular focal lengths, e.g. normal (~28mm).

18mm is a pretty good focal length; I find 14mm equivalent is hard to find use for as it is TOO wide ... and 28 is pretty boring and well covered by almost every other EF-S lens out there, so I'm glad it's not 28.  if this turns out to be a great lens I wouldn't mind going back to APS-C cameras just to use it.

jnskyliner34

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Re: APS-C 11mm f/2 Patent
« Reply #8 on: April 04, 2011, 10:01:53 PM »
I wonder how much this beauty will cost. I'll be tempted to sell my 10-22 (and maybe a kidney) for this.  :P

EYEONE

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Re: APS-C 11mm f/2 Patent
« Reply #9 on: April 04, 2011, 10:57:41 PM »
I'd take this over the 10-22mm. Bravo.
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IWLP

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Re: APS-C 11mm f/2 Patent
« Reply #10 on: April 04, 2011, 11:30:22 PM »
Excellent!  I think I'd still rather have a 15mm EF-S f/2-ish, but this could work quite nicely.  If nothing else, it could be a nice replacement for my 10-22mm, which stays plastered at 10 most often.
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Re: APS-C 11mm f/2 Patent
« Reply #11 on: April 05, 2011, 12:01:07 AM »
I wonder if it has a bulbous front element.

Stuart

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Re: APS-C 11mm f/2 Patent
« Reply #12 on: April 05, 2011, 04:11:28 AM »
Very Nice i'm sure, but F2? sure its nice to have but this allows me to reduce the in focus area from 2M to 0.7M wide open. I'm thinking this feature alone will not make it worth the money.
If its really damm sharp for landscaped at f22 also then maybe its more interesting.
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Re: APS-C 11mm f/2 Patent
« Reply #12 on: April 05, 2011, 04:11:28 AM »

goodmane

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Re: APS-C 11mm f/2 Patent
« Reply #13 on: April 05, 2011, 07:26:48 AM »
Could this be used on a m4/3 competitor for example, incorporating a fixed length lens but using a kind of digital zoom say 4/5 x?

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Re: APS-C 11mm f/2 Patent
« Reply #14 on: April 05, 2011, 12:21:44 PM »
Could this be used on a m4/3 competitor for example, incorporating a fixed length lens but using a kind of digital zoom say 4/5 x?

Its a patent, not a product.  Canon files thousands of them a year.  Only a very few actually become products. 

However, even if there were a adapter, it would not make much sense to mount it to a micro 4/3 camera, there would be no electrical connection, so the aperture would not work.  Without control of the aperture, a lens is not going to work out well.  It would be, of course, manual focus.

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Re: APS-C 11mm f/2 Patent
« Reply #14 on: April 05, 2011, 12:21:44 PM »