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Author Topic: Patent: Canon EF 14 f/2.8 with Fluorite  (Read 5026 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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« 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 »

dilbert

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Re: Patent: Canon EF 14 f/2.8 with Flourite
« Reply #7 on: February 25, 2013, 08:48:03 AM »
This is the 2nd time that a f/2.8-4.0 wide angle zoom has been mentioned.

paolo80

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Re: Patent: Canon EF 14 f/2.8 with Fluorite
« Reply #8 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 #9 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 #10 on: February 25, 2013, 01:13:46 PM »
Whether a new 14mm prime or 14-24, it won't be that easy for Canon.

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Re: Patent: Canon EF 14 f/2.8 with Fluorite
« Reply #11 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 #12 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?

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Re: Patent: Canon EF 14 f/2.8 with Flourite
« Reply #12 on: February 25, 2013, 05:35:03 PM »

J.R.

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Re: Patent: Canon EF 14 f/2.8 with Flourite
« Reply #13 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 Fluorite
« Reply #14 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 trump Nikon in the UWA zoom range and if we have any justice it would be as sharp as the new 24-70II.

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Re: Patent: Canon EF 14 f/2.8 with Fluorite
« Reply #14 on: February 26, 2013, 12:18:41 AM »