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Author Topic: Patent: Canon EF 14 f/2.8 with Fluorite  (Read 9285 times)

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Patent: Canon EF 14 f/2.8 with Fluorite
« on: February 25, 2013, 06:57:25 AM »

Patent for wide angle fluorite concepts

Canon has filed patent for a wide angle fluorite concept. Such a patent could be part of a new ultra-wide zoom lens, perhaps a 14-24 or a replacement to the 16-35. Egami also thinks it’s possible this patent could be for the EF-M mount. It’s an interesting read, even when Google translated. Read the full patent here.



  • Patent Publication No. 2013-37339

    • 2013.2.21 Release Date

    • Filing date 2011.7.12



  • Example 1

    • Zoom ratio 1.00

    • Focal length f = 1.00mm

    • Fno. 2.90

    • Half angle of view ω = 56.66 °

    • Image height Y = 1.52mm

    • 9.51mm length lens

    • BF 2.82mm

    • 6 aspherical surfaces, the first surface 25

    • Punctually



  • Example 3

    • Zoom ratio 2.06

    • 2.06mm – f = 1.00 focal length

    • Fno 2.79 -. 4.00

    • Half angle of view ω = 51.27 – 32.82 °

    • 1.33mm – Y = 1.25 image height

    • 8.55mm – 8.79 length lens

    • BF 2.41 – 3.46mm

    • Aspheric first surface, the fifth surface, the first surface 26

    • Positive and negative positive negative



  • Example 6

    • Zoom ratio 1.00

    • Focal length f = 1.00mm

    • Fno. 2.90

    • Half angle of view ω = 87.35 °

    • Image height Y = 21.60mm

    • 9.51mm length lens

    • BF 2.82mm

    • 6 aspherical surfaces, the first surface 25

    • Punctually




Source: [EG]


cr


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Patent: Canon EF 14 f/2.8 with Fluorite
« on: February 25, 2013, 06:57:25 AM »

messus

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Re: Patent: Canon EF 14 f/2.8 with Flourite
« Reply #1 on: February 25, 2013, 07:09:30 AM »
Please GOD let this be true!!! And please give it to us now!!!!

J.R.

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Re: Patent: Canon EF 14 f/2.8 with Flourite
« Reply #2 on: February 25, 2013, 07:20:53 AM »
Considering the already insane price of the 14mm 2.8 II, I fear the worst if a III version were to be launched
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mustafa

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Crumbs!
« Reply #3 on: February 25, 2013, 07:21:17 AM »
Let's hope it's fluorite.  Flourite sounds like a bread ingredient 

Nishi Drew

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Re: Patent: Canon EF 14 f/2.8 with Flourite
« Reply #4 on: February 25, 2013, 07:23:32 AM »
Great, so now the UWAs are getting a white finish too

J.R.

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Re: Patent: Canon EF 14 f/2.8 with Flourite
« Reply #5 on: February 25, 2013, 07:34:43 AM »
Let's hope it's fluorite.  Flourite sounds like a bread ingredient 

Well spotted.

"Flourite" is a branded product. I may hasten to add that it has nothing to do with cameras / lenses -

"Flourite® is a specially fracted, stable porous clay gravel for the natural planted aquarium"
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Ricku

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Re: Patent: Canon EF 14 f/2.8 with Flourite
« Reply #6 on: February 25, 2013, 07:47:02 AM »
Uber sharp 14-24L or 16-35L III.
Bring it on.

Considering the already insane price of the 14mm 2.8 II, I fear the worst if a III version were to be launched
Insane indeed.

$2400 14mm f/2.8 L
VS
$370 Samyang 14mm

And many tests has proven that the Sammy is equaly as good as the 14L.. Except for the lack of AF, but who cares?  :P

Canon, please stop being insane.
« Last Edit: February 25, 2013, 07:58:51 AM by Ricku »

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Re: Patent: Canon EF 14 f/2.8 with Flourite
« Reply #6 on: February 25, 2013, 07:47:02 AM »

paolo80

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Re: Patent: Canon EF 14 f/2.8 with Fluorite
« Reply #7 on: February 25, 2013, 12:58:33 PM »
Damn it, I just ordered a 16-35

Radiating

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Re: Patent: Canon EF 14 f/2.8 with Flourite
« Reply #8 on: February 25, 2013, 01:06:17 PM »
This is the 2nd time that a f/2.8-4.0 wide angle zoom has been mentioned.

This is a patent for an EF-S or EF-M  17-35mm f/2.8-f/4.0 lens

And two 14mm f/2.8 lenses.

The current 14mm f/2.8 I and II is a joke especially with the Samyang 14mm f/2.8 out there which in my experience owning all 3 the Samyang is the winner, and you barley need to focus on such a wide lens anyways.

The 14-24mm f/2.8 is an absolute joke especially compared to the 14-24mm f/2.8 from nikon or if you are willing to sacrifice fov the 17mm TS-E is so much better. I would pick any of those lenses before I went with Canon's one.

Anyways this patent also brings up an interesting idea, a 14-30mm f/2.8-f/4.0 lens. That's something I could get behind.

ddashti

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Re: Patent: Canon EF 14 f/2.8 with Fluorite
« Reply #9 on: February 25, 2013, 01:13:46 PM »
Whether a new 14mm prime or 14-24, it won't be that easy for Canon.

TommyLee

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Re: Patent: Canon EF 14 f/2.8 with Fluorite
« Reply #10 on: February 25, 2013, 02:29:27 PM »
mustafa

you made me laugh out loud... that is so funny
I would EAT some flouite for an improved (as in PERFECT) 14MM lens

yes ...love that flourite...
..........

I have the 16-35 II, 14L II (ready for some improvement again ...as the 14L III)

how did I get so hooked on really  ' W  I  D   E '?

we are so spoiled....
and I love it
............

humor.... means ....thinking at a higher level
thanks again

TOM


P.S.
Samyang SEEMS like a good option for ... 4 times...ok ok....5 times... wait....6 times less $$ .........ha...
it has - I hear -  a bit more distortion, but should be considered...

I DO love my 14L II.. and DEMAND autofocus... in how I use it

but I would agree here that Samyang 14mm is a possible option....

can we please get Canon's head out of the clouds.......soon
we want the products but we cant all drive TestaRosas and Antique Aston Martins ...



 
« Last Edit: February 25, 2013, 02:36:22 PM by TommyLee »

Woody

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Re: Patent: Canon EF 14 f/2.8 with Flourite
« Reply #11 on: February 25, 2013, 05:35:03 PM »
The 14-24mm f/2.8 is an absolute joke especially compared to the 14-24mm f/2.8 from nikon...

A joke? How can this be when Canon does not even have a 14-24 f/2.8 lens to begin with?

J.R.

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Re: Patent: Canon EF 14 f/2.8 with Flourite
« Reply #12 on: February 25, 2013, 10:56:54 PM »

The 14-24mm f/2.8 is an absolute joke especially compared to the 14-24mm f/2.8 from nikon or if you are willing to sacrifice fov the 17mm TS-E is so much better. I would pick any of those lenses before I went with Canon's one.


Are you from the future commenting about a lens not released by Canon as on date? If yes, please let us know on what date the production model of the 200-400 was released ... I'm tired of waiting :P
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Re: Patent: Canon EF 14 f/2.8 with Flourite
« Reply #12 on: February 25, 2013, 10:56:54 PM »

Normalnorm

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Re: Patent: Canon EF 14 f/2.8 with Fluorite
« Reply #13 on: February 26, 2013, 12:18:41 AM »
So why fool around with a me too lens?

As Sigma already makes a 12-24 zoom (I owned a ver1) it seems to me that Canon could do Nikon one better and make  a 12-24 f4.
My Sigma was sharp in the center at f8 and smaller and sharp-ish at the extreme edges only at f13. I have heard reports that the ver2 is much better.

If Canon did this they would Me_Me_Me Nikon in the UWA zoom range and if we have any justice it would be as sharp as the new 24-70II.

Gcon

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Re: Patent: Canon EF 14 f/2.8 with Fluorite
« Reply #14 on: February 26, 2013, 12:41:35 AM »
If Kryptonite comes from the planet Krypton, Does that mean fluorite come from the planet Fluoron? This is important stuff to me - being the superhero that I am...

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Re: Patent: Canon EF 14 f/2.8 with Fluorite
« Reply #14 on: February 26, 2013, 12:41:35 AM »