October 01, 2014, 10:40:53 AM

Author Topic: Patent: EF-M 22-46mm f/3.5-5.6  (Read 2081 times)

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Patent: EF-M 22-46mm f/3.5-5.6
« on: April 13, 2014, 05:54:48 AM »

A patent which appears to be for the EF-M mount has appeared. In APS-C, this lens would be a 35-75mm f/3.5-5.6.


Canon has stated that more lenses are coming for EOS M, and that could potentially mean the North American and European markets are still on Canon’s radar for the EOS M system. My bet is we’ll see an EOS M3 to re-introduce the product line to a global market.


Patent Publication No. 2014-63025 (Google Translation)



  • Publication date 2014.4.10

  • Filing date 2012.9.21


Example 7



  • Zoom ratio 2.09

  • Focal length f = 22.10-34.22-45.19mm

  • Fno. 3.60-4.59-5.60

  • Half angle ω = 31.72-21.76-16.48 °

  • Image height 13.66mm

  • 65.76-62.07-64.72mm lens length

  • BF 28.16-36.88-45.09mm


Source: [EG]


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Patent: EF-M 22-46mm f/3.5-5.6
« on: April 13, 2014, 05:54:48 AM »

neuroanatomist

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Re: Patent: EF-M 22-46mm f/3.5-5.6
« Reply #1 on: April 13, 2014, 07:29:46 AM »
Given that there's already an EF-M 18-55/3.5-5.6, I expect this patent won't see the light of day as a product.
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Re: Patent: EF-M 22-46mm f/3.5-5.6
« Reply #2 on: April 13, 2014, 08:51:21 AM »
Seems to be a reasonable bet if the M3 has the same sized sensor as the previous Ms.
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Re: Patent: EF-M 22-46mm f/3.5-5.6
« Reply #3 on: April 13, 2014, 09:47:37 AM »
Given that there's already an EF-M 18-55/3.5-5.6, I expect this patent won't see the light of day as a product.

I would imagine that there is something else special about this lens such as being collapsible.

neuroanatomist

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Re: Patent: EF-M 22-46mm f/3.5-5.6
« Reply #4 on: April 13, 2014, 11:16:19 AM »
Given that there's already an EF-M 18-55/3.5-5.6, I expect this patent won't see the light of day as a product.
I would imagine that there is something else special about this lens such as being collapsible.

Perhaps, but I doubt it.  Canon is awarded well over 2000 patents per year, but they launch far, far fewer products per year. Many patents are submitted in the course of development, to test different design ideas.  King at the block diagram in this patent, it appears (at least at the low resolution of my phone) that there are six elements in five groups.  That's less than half the number in the M 18-55, and even fewer than the 22/2 pancake.  Canon may be testing how little glass (or plastic) they can get away with in a lens design. 
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Re: Patent: EF-M 22-46mm f/3.5-5.6
« Reply #5 on: April 13, 2014, 11:20:52 AM »
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<p>A patent which appears to be for the EF-M mount has appeared. In APS-C, this lens would be a 35-75mm f/3.5-5.6.</p>
<p>Canon has stated that more lenses are coming for EOS M, and that could potentially mean the North American and European markets are still on Canon’s radar for the EOS M system. My bet is we’ll see an EOS M3 to re-introduce the product line to a global market.</p>
<p><strong>Patent Publication No. 2014-63025 (Google Translation)</strong></p>
<ul>
<li>Publication date 2014.4.10</li>
<li>Filing date 2012.9.21</li>
</ul>
<p><strong>Example 7</strong></p>
<ul>
<li>Zoom ratio 2.09</li>
<li>Focal length f = 22.10-34.22-45.19mm</li>
<li>Fno. 3.60-4.59-5.60</li>
<li>Half angle ω = 31.72-21.76-16.48 °</li>
<li>Image height 13.66mm</li>
<li>65.76-62.07-64.72mm lens length</li>
<li>BF 28.16-36.88-45.09mm</li>
</ul>
<p>Source: [<a href="http://egami.blog.so-net.ne.jp/2014-04-12" target="_blank">EG</a>]</p>
<p><strong><span style="color: #ff0000;">c</span>r</strong></p>


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Re: Patent: EF-M 22-46mm f/3.5-5.6
« Reply #6 on: April 13, 2014, 05:44:15 PM »
Given that there's already an EF-M 18-55/3.5-5.6, I expect this patent won't see the light of day as a product.
I would imagine that there is something else special about this lens such as being collapsible.

Perhaps, but I doubt it.  Canon is awarded well over 2000 patents per year, but they launch far, far fewer products per year. Many patents are submitted in the course of development, to test different design ideas.  King at the block diagram in this patent, it appears (at least at the low resolution of my phone) that there are six elements in five groups.  That's less than half the number in the M 18-55, and even fewer than the 22/2 pancake.  Canon may be testing how little glass (or plastic) they can get away with in a lens design.

What is the lens...about 2.5 inches in length? The 22mm is about 1.5 inches in length? Is the M 17-55mm about 2.5 inches in length? Am I on the right track?
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Re: Patent: EF-M 22-46mm f/3.5-5.6
« Reply #6 on: April 13, 2014, 05:44:15 PM »

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Re: Patent: EF-M 22-46mm f/3.5-5.6
« Reply #7 on: April 14, 2014, 12:06:59 AM »
Weird.  M-mount version of the 20-35mm EF lens??  something like that..
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Re: Patent: EF-M 22-46mm f/3.5-5.6
« Reply #8 on: April 14, 2014, 03:21:56 AM »
Canon is making a big mistake since they seem to think that mirrorless systems are of far less importance.  IMO they clearly are the future, well the present actually, and they will shortly sell more than DSLRs.  That's already true in Korea in fact.  I find that position surprising from Canon.

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Re: Patent: EF-M 22-46mm f/3.5-5.6
« Reply #9 on: April 14, 2014, 03:29:59 AM »
Almost certainly some kind of collapsible pancake but those specs seem pretty limited even for that, perhaps an ultra small lens or maybe just a test of the tech?

Not really sure why this would point towards a US release as it seems well suited for the existing very small bodies that sell better in the far east. Ultimately the US mirrorless market is pretty tiny compared to Japan and elsewhere so I'm not seeing that any money spent on it means Canon will return.

My guess would be when/if Canon relaunch the M system it the US it'll be with a higher end body with a viewfinder. I think its pretty clear that what profit there is to be made from mirrorless in the US mainly comes from higher end bodies, look at the amazon mirrorless sales charts and there right up the top.

Personally I think Canon would be well served by a good but not too premium mirrorless body, use the 70D sensor, add an EVF, a small grip and a few more controls without it costing the earth and I think there lens lineup with put them in a strong position. Other systems might have more depth but for core lenses that are optically strong but still affordable the EOS M system seems to have an advantage to me, add in a short macro and a tele zoom of a similar standard and I think you'd got it covered for many people.
« Last Edit: April 14, 2014, 03:41:45 AM by moreorless »

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Re: Patent: EF-M 22-46mm f/3.5-5.6
« Reply #10 on: April 14, 2014, 04:37:17 AM »
Almost certainly some kind of collapsible pancake but those specs seem pretty limited even for that, perhaps an ultra small lens or maybe just a test of the tech?

Not really sure why this would point towards a US release as it seems well suited for the existing very small bodies that sell better in the far east. Ultimately the US mirrorless market is pretty tiny compared to Japan and elsewhere so I'm not seeing that any money spent on it means Canon will return.

My guess would be when/if Canon relaunch the M system it the US it'll be with a higher end body with a viewfinder. I think its pretty clear that what profit there is to be made from mirrorless in the US mainly comes from higher end bodies, look at the amazon mirrorless sales charts and there right up the top.

Personally I think Canon would be well served by a good but not too premium mirrorless body, use the 70D sensor, add an EVF, a small grip and a few more controls without it costing the earth and I think there lens lineup with put them in a strong position. Other systems might have more depth but for core lenses that are optically strong but still affordable the EOS M system seems to have an advantage to me, add in a short macro and a tele zoom of a similar standard and I think you'd got it covered for many people.
I agree - they need to play in this league or they may lose in the long term - what you suggest would be appropriate M3 ... and with a couple of extra small lenses, they will have a viable platform. FF mirrorless would also be good..... but I think I will be waiting slightly longer

moreorless

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Re: Patent: EF-M 22-46mm f/3.5-5.6
« Reply #11 on: April 14, 2014, 06:59:34 AM »
Canon is making a big mistake since they seem to think that mirrorless systems are of far less importance.  IMO they clearly are the future, well the present actually, and they will shortly sell more than DSLRs.  That's already true in Korea in fact.  I find that position surprising from Canon.

I think the big issue is gauging in what areas mirrorless is a threat to there existing business.

Personally I don't see FF mirrorless as a threat to EF mount in the short to mid term and maybe not even the long term. Besides the issues of lens balance, battery life and the level of manual controls FF users tend to want I think were also seeing with the Sony FE system that ultra small flange distances aren't a good idea for larger sensors.

ASPC is IMHO going to be the key battleground as I think the size saving potential is greater and the demand for smaller bodies is higher. Even there though I would say that I think part of the reason why higher end m43 and Fuji products have found a market is because Canon and Nikon haven't really gone after that market. I'm guessing they've booth been trying to funnel higher end sales to FF(or ASPC users shooting FF tele's) but I don't see any reason we couldn't see a smaller ASPC body with better build and more advanced controls(Nikon have fitted a high level AF sensor into there D5xxx bodies now) plus release some EF-S primes.

I suspect the really key areas will be firstly in the far east the really small ASPC/m43 mirrorless bodies that compact/phone upgraders might buy and in the west more the mid level ASPC/m43 mirrorless that might target the same market as entry level ASPC DSLR's. Again for me I think you could argue that Canon have started to lay a good framework for ASPC mirrorless with its lens lineup, its tiny compared to there rivals but it seems to be targeted more to your standard users.

Sony's Achilles heel for me has always been the way they treat users, under designing kit lenses to push people to buy overpriced upgrades is not the way to get long term customer confidence.

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Re: Patent: EF-M 22-46mm f/3.5-5.6
« Reply #12 on: April 14, 2014, 01:05:35 PM »
This means nothing to me until they make some large aperture primes, large constant aperture zooms, or a speedbooster that allows me to use my EF lenses at the right perspective.

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Re: Patent: EF-M 22-46mm f/3.5-5.6
« Reply #12 on: April 14, 2014, 01:05:35 PM »