August 20, 2014, 03:14:45 AM

Author Topic: Patent: Canon EF 24-70 f/2.8L IS  (Read 3020 times)

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Patent: Canon EF 24-70 f/2.8L IS
« on: April 17, 2014, 04:37:14 PM »

Another patent showing a Canon EF 24-70 f/2.8L IS. We have seem them in the past and have been told that prototypes have existed for such a lens. The issue has always been size and weight and it being usable over long periods of time for event photographers.


Patent Publication No. 2014-52413,2014-52445



  • Publication date 2014.3.20

  • Filing date 2012.9.5


Example 1



  • Zoom ratio 2.75

  • Focal length f = 24.7-35.21-68mm

  • Fno. 2.9

  • Half angle ω = 41.21-31.57-17.65 °

  • Image height 21.64mm

  • 223.94-207.87-180.56mm overall length of the lens

  • BF 38.31mm


Source: [EG]


cr


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Patent: Canon EF 24-70 f/2.8L IS
« on: April 17, 2014, 04:37:14 PM »

Dylan777

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Re: Patent: Canon EF 24-70 f/2.8L IS
« Reply #1 on: April 17, 2014, 04:44:00 PM »
I'm in if iq is good as ii or better, otherwise, I have no need for IS. Since I don't shoot slow shutter much in this range.
« Last Edit: April 17, 2014, 04:58:55 PM by Dylan777 »
Body: 1DX -- 5D III
Zoom: 24-70L II -- 70-200L f2.8 IS II
Prime: 40mm -- 85L II -- 135L -- 400L f2.8 IS II

mackguyver

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Re: Patent: Canon EF 24-70 f/2.8L IS
« Reply #2 on: April 17, 2014, 04:47:12 PM »
It would have to be better IQ for me to bite.  I can't see the need for IS in this range, at least for my shooting.
EOS 1D X, 5DIII, M + EF 24 f/1.4II, 50 f/1.2, 85 f/1.2II, 300 f/2.8 IS II || 16-35 f/4 IS, 24-70 f/2.8II, 70-200 f/2.8II || TS-E 17 f/4, 24 f/3.5II || M 22 f/2, 18-55 f/3.5-5.6 IS || 1.4x III, 2x III

Jim Saunders

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Re: Patent: Canon EF 24-70 f/2.8L IS
« Reply #3 on: April 17, 2014, 04:50:35 PM »
I'm in if iq is good as ii

Same, but I can imagine what it would cost...  :-\

Jim
I'd probably do better to invest more time and less money.

Sanaraken

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Re: Patent: Canon EF 24-70 f/2.8L IS
« Reply #4 on: April 17, 2014, 04:57:00 PM »
I will upgrade if the IQ is the same or better. I've always want IS on the 24-70. I really like the IS on the 70-200II
5DIII | 24-70L f2.8 II | 70-200L f2.8 IS II | 40 f2.8 | 100L f2.8 | 600EX-RT

Skywise

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Re: Patent: Canon EF 24-70 f/2.8L IS
« Reply #5 on: April 17, 2014, 05:12:57 PM »
I just purchased my 24-70 II and would upgrade as well.  I like to shoot low light shots and indoors and have been recently playing with longer shutter speeds for flowing water effects.  IS would come in very handy for that without me having to carry a tripod around.

Lee Jay

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Re: Patent: Canon EF 24-70 f/2.8L IS
« Reply #6 on: April 17, 2014, 05:57:47 PM »
The issue has always been size and weight and it being usable over long periods of time for event photographers.

?????

I use a 70-200/2.8, as do many event photographers.  As long as it's on par with or smaller than that, why would this be an issue?

I hope the Sigma 24-70/2.0 OS is real.  I'd be more interested in that lens.
« Last Edit: April 17, 2014, 06:01:41 PM by Lee Jay »

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Re: Patent: Canon EF 24-70 f/2.8L IS
« Reply #6 on: April 17, 2014, 05:57:47 PM »

CarlMillerPhoto

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Re: Patent: Canon EF 24-70 f/2.8L IS
« Reply #7 on: April 17, 2014, 06:27:54 PM »
The issue has always been size and weight and it being usable over long periods of time for event photographers.

?????

I use a 70-200/2.8, as do many event photographers.  As long as it's on par with or smaller than that, why would this be an issue?

I hope the Sigma 24-70/2.0 OS is real.  I'd be more interested in that lens.

+1

The only time I see weight as a relevant consideration is if 1. You're traveling, or 2. You're shooting for personal reasons.

A Sigma 24-70 f2 OS would be amazing. With the way things are going lately it's not a stretch to image nothing but 3rd party lenses in my camera bag. That thought makes my wallet very happy.
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AvTvM

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Re: Patent: Canon EF 24-70 f/2.8L IS
« Reply #8 on: April 17, 2014, 07:13:17 PM »
i'm sick and tired of reading how IS would make a lens so much heavier and biggerand compromise image quality  ... bla bla bla ... just a bunch of completely unfounded urban myths.

e.g. look at EF 70-200/4 L without IS 76x172mm, 705g and EF 70-200/4 L IS with IS 76x172mm, 760 g ... so a paltry 55 grams more .. for a lens with pretty big glass elements to be stabilized. And image quality is better on 70-200/4 with IS too. Price difference is excessive though, and purely marketing driven.

EF 24-70/2.8 L II should have been IS from the start ... especially at the price differential over the previous version.

tianxiaozhang

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Re: Patent: Canon EF 24-70 f/2.8L IS
« Reply #9 on: April 17, 2014, 07:34:08 PM »
At their current pricing scheme this should be around $3000......

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Re: Patent: Canon EF 24-70 f/2.8L IS
« Reply #10 on: April 17, 2014, 07:41:55 PM »
i'm sick and tired of reading how IS would make a lens so much heavier and biggerand compromise image quality  ... bla bla bla ... just a bunch of completely unfounded urban myths.

e.g. look at EF 70-200/4 L without IS 76x172mm, 705g and EF 70-200/4 L IS with IS 76x172mm, 760 g ... so a paltry 55 grams more .. for a lens with pretty big glass elements to be stabilized. And image quality is better on 70-200/4 with IS too. Price difference is excessive though, and purely marketing driven.

EF 24-70/2.8 L II should have been IS from the start ... especially at the price differential over the previous version.

This, this, 1000 times, THIS!

Size/weight is really not an excuse.  They just want to milk money out of as many variations as possible.

I'd love a 24-70 f/2.8 with IS for run-and-gun video!

SoullessPolack

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Re: Patent: Canon EF 24-70 f/2.8L IS
« Reply #11 on: April 17, 2014, 07:58:40 PM »
i'm sick and tired of reading how IS would make a lens so much heavier and biggerand compromise image quality  ... bla bla bla ... just a bunch of completely unfounded urban myths.

e.g. look at EF 70-200/4 L without IS 76x172mm, 705g and EF 70-200/4 L IS with IS 76x172mm, 760 g ... so a paltry 55 grams more .. for a lens with pretty big glass elements to be stabilized. And image quality is better on 70-200/4 with IS too. Price difference is excessive though, and purely marketing driven.

EF 24-70/2.8 L II should have been IS from the start ... especially at the price differential over the previous version.

Not a really well thought out post, is it, buddy? 

You're comparing a much older lens, the 70-200 f4, to a much newer lens, the 70-200 f4 IS.  In the time difference between each's respective introduction to the market, Canon has improved both their optical designs as well as materials used.  So while, yes, the available lenses that you listed are close together, your argument is invalid.  Had Canon made a new and current version of the non-IS 70-200 f4 at the same time as they introduced the IS version of the f4, the weight of the non-IS would be less due to those advancements I just stated.  So yes, IS does add bulk and weight to a lens, it's just that we don't notice much, because at the same time there are also improvements in weight reduction.

That being said, people complaining about a little extra weight really need to grow a pair and hit the gym a little.  I work out regularly, and I've never had an issue handholding my 300mm 2.8 lens for a whole day whether it's my kids' sports or at the racetrack.  I have a 400mm 2.8 now, and I also do okay with that for several hours.  If it's a really long day, like an all day shoot, then it gets a little tiring, but nothing where I stop shooting.  To hear whining about "heavy" lenses, like this supposed lens, which would be about 2 pounds, is hilarious.  It's not an issue if you take care of your body and exercise a bit.  Do you realize how pathetic and weak you sound?  My wife takes care of our kids everyday.  Our infant can't even walk yet, and he weighs more than a Canon 800mm f/5.6.  She never complains.  I'm sure any mother would laugh at you people who complain how a new lens will be too heavy for all day use.

CarlMillerPhoto

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Re: Patent: Canon EF 24-70 f/2.8L IS
« Reply #12 on: April 17, 2014, 08:02:38 PM »
That being said, people complaining about a little extra weight really need to grow a pair and hit the gym a little.  I work out regularly, and I've never had an issue handholding my 300mm 2.8 lens for a whole day whether it's my kids' sports or at the racetrack.  I have a 400mm 2.8 now, and I also do okay with that for several hours.  If it's a really long day, like an all day shoot, then it gets a little tiring, but nothing where I stop shooting.  To hear whining about "heavy" lenses, like this supposed lens, which would be about 2 pounds, is hilarious.  It's not an issue if you take care of your body and exercise a bit.  Do you realize how pathetic and weak you sound?  My wife takes care of our kids everyday.  Our infant can't even walk yet, and he weighs more than a Canon 800mm f/5.6.  She never complains.  I'm sure any mother would laugh at you people who complain how a new lens will be too heavy for all day use.

+ 10gazillion.
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Re: Patent: Canon EF 24-70 f/2.8L IS
« Reply #12 on: April 17, 2014, 08:02:38 PM »

Lee Jay

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Re: Patent: Canon EF 24-70 f/2.8L IS
« Reply #13 on: April 17, 2014, 08:47:05 PM »
To hear whining about "heavy" lenses, like this supposed lens, which would be about 2 pounds, is hilarious.  It's not an issue if you take care of your body and exercise a bit.  Do you realize how pathetic and weak you sound?

Do you realize how dumb you sound, saying the above after two posts pointing out that weight isn't an issue?

expatinasia

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Re: Patent: Canon EF 24-70 f/2.8L IS
« Reply #14 on: April 17, 2014, 08:51:50 PM »
The issue has always been size and weight and it being usable over long periods of time for event photographers.

?????

I use a 70-200/2.8, as do many event photographers.  As long as it's on par with or smaller than that, why would this be an issue?

My thoughts exactly.
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Re: Patent: Canon EF 24-70 f/2.8L IS
« Reply #14 on: April 17, 2014, 08:51:50 PM »