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EF-S 17-55 Replacement Coming?
A patent has been discovered showing the existence of an EF-S 17-55 f/2 IS lens.
Canon EF-S 17-55 f/2 IS
Patent Publication No. 2010-14866
Published 2010/01/21
Filing Date: 2008/07/02
Example 1
Focal length f = 17.50 ~ 53.05mm
Brightness F = 2.0
Focus back 34.90 ~ 48.26mm
Example 2
Focal length f = 17.50 ~ 52.36mm
Brightness F = 1.8
Back Focus 34.15 ~ 45.06mm
General
Zoom is easy to increase the rate
Increase the amount of movement of the lens
But more aberration
Large diameter is easily
To compensate by increasing the number of lens aberration
But heavier
Patent literature
Placement of the lens to optimize the refractive index
Aspheric lenses
From Here: http://egami.blog.so-net.ne.jp/2010-02-08#more
CR's Take
I've looked quickly, but I haven't been able to find the actual patent anywhere. Can anyone else?
Thanks Justin
Finally, something to be excited about
oh, er and, first
How many people would have wet themselves if this was EF?
That would be a really nice lens. I’d buy it.
It’d go nicely with a 1D3 or 1D4.
you think? i think that would be just way too good to be true, no one would believe it until they saw it.
that being said, would this be feasible in EF-mount? not likely, unless it was huge, and hugely expensive
They should also make it an L serie lens so we finaly get a well built EF-S general zoom lens !
Looks FAKE to me…
If you look closely you will notice that all the aspheric elements present in the current f2.8 version have “strangely” become spherical elements in this new drawing.
Someone must have use Photoshop trying to reproduce the design.
Great. I’ll buy it together with the 60D.
The patent info has been referred to in several recent posts on DPR. However, it all seems to come from one source so far, and no one has seen the original.
I assume it is a japanese patent, Canon usually also files for a US Patent, usually it appears later.
I, for one would be suprised to see it soon, the existing lens does not need upgrading.
Only a small percentage of patents actually turn into real products.
I can’t read the original page, so I’m not sure what they are saying. I can say that’s not a valid US Patent number, and it doesn’t even have the correct number of digits. It’s interesting the the block diagram is almost identical for the f2.8 version of the lens. I would not expect that to be the case.
They can’t make an EF-S L lens, one of the criteria Canon have laid down for an L designation is that it can fit all EOS cameras. Unless they change policy, there will never be an EF-S L lens.
Wow, a patent – let the rumour mill run wild. Before you get excited just read the following – “Camera makers amongst world’s top patent applicants” (http://www.dpreview.com/news/1002/10021101camerapatents.asp). There is a very long way from a patent to a product.
While Canon may not want to put the letter L on an EF-S lens, that doesn’t mean they can’t build an EF-S lens to L standards.
agreed; the line quality also does not look like what appears in other canon patent rumors
We need more Pro EF lenses. There haven’t been any new EF lenses for years! The new 70-200 II is nowhere to be found. Nobody has it, nobody has a price… Where the hell is the 24-70 II? New technology on the 7D and 1D4 and 10-year old tech on the lenses…
I know the pro-sumer cameras are keeping Canon alive but all these EF-S lenses are useless and cheap unless u own a crappy Rebel.
The S in EF-S stands for Short or for S*IT?
Some would say they already do, maybe not weatherproofed (but until the 7D no EF-S compatible cameras were either) but certainly from an IQ point of view. How much do you want to pay for your small image circle lenses?
Wait so Canon releases the first zoom lens with a larger aperture than f/2.8 and they make it an EF-S lens… Something does not seem right.
You obviously haven’t tried the 17-55 2.8 then. It’s one of the best zoom lenses Canon makes. PERIOD.
I have located this particular patent, unforetunately it is in Japanese. It talks about how to achieve higher level of optical performance in the entire focal length of the zoom lens by adjusting zoom ratio and going larger diameter optics.
I could not find the detail regarding the lens mentioned. Although it may be buried in the details.
Here is the link to the pdf file for the patent at the Japanese Patent Office.
http://www23.ipdl.inpit.go.jp/PDF/display/JPA_2010014866.pdf?id=5907
Fake. The lens layout is identical to the original 17-55 f/2.8 IS.
no effin way is this coming out. cmon admin, stop posting stupid crap that will never happen. this website is full garbage.
It’s physically easier to make an f/2 zoom for a smaller sensor.
Olympus has been making f/2 zooms for their 4/3 sensor for while. One example is the Olympus 35-100 f/2.0 Zuiko
Well, isn’t it his job to post “rumors”?
It may seem completely fake or fabricated, but it’s still a rumor none the less. All rumors have to start somewhere ;]
This is a FAKE.
The US Patent and Trademark Office publishes applications 18 months after filing. It should have been published on the 2nd of January.
The USPTO makes the published applications available online and are easily searchable from the application number. the number listed does reveal a patent published on the indicated date, but it is for an invention for “Digital Automatic Gain Control”
http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220100014866%22.PGNR.&OS=DN/20100014866&RS=DN/20100014866
You guys can call it fake.
This patent is linked to what is shown in the Japan Patent Office and looks like it was filed in Japan. It was not filed in the United States. Please look at the website it is linked too.
You can call it fake if you want.
This patent is linked to what is shown in the Japan Patent Office and looks like it was filed in Japan. It was not filed in the US Patent and Trademark Office. The patent was applied for on July 2nd of 2008 and published on Janaury 21st of 2010.
Also,please look at the website it is linked to.
japanese patent filed in japan….
has IS too over the 24-70!
I don’t read Japanese, but I did find the Japanese equivalent of the USPTO database.
http://www4.ipdl.inpit.go.jp/NSAPITMP/web041/20100217135926664754.htm#DL000 shows the patent. It mentions through butchered autotranslate “high caliber ratio” which I think means aperture ratio. In the detailed description section it says 17.5-53 F no 1.8 OH MY GOD!
My current system doesn’t have the plugin to view the drawing to confirm, but I think it’s also published recently in the USA.
Given that the 17-55 is the 3rd oldest EF-S zoom in production, why the h*ll not. Maybe all the failed IS and dust problems finally got to them. RECALL!
Wow! I have had the pleasure of using the the fantastic 17-55 EF-S for a couple of years now, but I’d replace it in a second for an extra full stop! Bring it on!
Oh Please…God…Yes please!
new IS on a 1.8 version of Canons sharpest non prime lens. Cant be real…can it. Its to good.
This would definitely top my list but it’s probably like $2k :-( Waaaaay out of budget
17-55 is already expensive enough.
You obviously shoot with a crop camera most of the time…
well a 27-88 f/3.2 (quoted up to ff) makes me not wet at any place :-)
(I even don’t own any 24-70 mm lens because this focal length is boring for my taste except the wide end and there is now a comfortable number of choices)
A 17-55 f/2.0 for ff would be really nice but probably too heavy!!
A 50-135 f/2.0 for ff would be IMHO much more attractive combined with a 12-24 f/4.0 on high optical level – I’d give these two lenses a 50:50 chance for ff
If the EF-S 17-55 f/2.0 turns out to be true it will might be a game changer for the crop format in the ongoing competition. For FF there is no game changer needed because Canon has already the best lens lineup for my purpose and for many others too.
Just to remind – the TS-E 17 and 24 are the best in their class – oh – there is no 1:1 equivalent at any brand :-)
(I own the TS-E 17 and I could not imagine to live without it any more for my style of photography)
Yes, the 17-55/2.8 is a great lens. On APS-C it’s even better than a lot of the primes within its range (sharper throughout the frame). Certainly sharper than the Canon 28’s and the Sigma 30. Yes, those reach up to f/1.8 and f/1.4, but they are not sharp there, and for 95% of the uses f/2.8 + IS is a lot more useful. Based on my experience (and a lot of tests on the net), the only lenses in its range that have a distinct IQ advantage on it are the 35/1.4 (with its price, no wonder) and Sigma 50/1.4. A, albeit a bit longer, the EF-S 60/2.8 macro (which I also love).
They can; in the past they put the “L” on a least one compact camera lens, so…
And now with the 7D, they even have a logical match.
with all due respect, you are incorrect
the lens speed does not change when going from crop to FF
an f/2 lens is an f/2 lens irrespective of sensor format
Look at lens arrangement: F1.8 at 55 mm needs a diameter of the smallest lens of about 30mm – I thing a F1.8 version is roughly 150 mm long and weights 1kg+. A monster!
Where are ultra compact primes for EF-S like 2.0 15mm or 1.4 30mm? With good close focus capability, a reduced number of lenses to control flare.
Where is the “intelligent lens cap”, a very compact EVIL cam which fits with such a small EF-S lens into a compact backpack?
For some people a F2.0 or F1.8 zoom is really interesting, but it has
its drawbacks …
You are right about the light gathering capabilities.
What he means is about the equivalent depth of field.
Although the most common conversion I’ve seen is “one stop”, which means the equivalent DOF of the photos you can make with this 17-55/2 would be FF photos made with a 27-88/3.2 (or a more conservative 27-88/2.8).
Taste FF once, you’ll never come back…
But an EF-S lens will not fill the whole FF-circle. For fitting on a FF, the lens has to get a larger diameter, thus resulting in a larger/heavier lens.
This f/2 would be great for all those people with an aps-c who can only dream of a FF. If the quality was comparable to that of the “old” f/2.8 then you could have the best of both worlds.
oh and btw, I was reading this, yesterday
http://www.canonrumors.com/2009/09/from-the-archive/
I was waiting for something wide that kicks ass, something like Sigma 12-24 for full frame but with bigger hole and faster AF, rather than this EF-S(h.t)
It’s good for crop, but not for my good ol’ Eos 50E or 1dII…
but in the other hand wide zoom lens with f/2 will definitely kick ass in crop-lenses-part of market…
I think what jo-1 means, is that f2/iso1250 on a crop sensor (1,6x) will give you the same results (depth of field and quality in low light) as f3.2/iso3200 on FF. (e.g. 50D and 5D2)
Technically, f2 stays f2, but the results are similar to f3.2 on FF.
Everything has its tradeoffs. To me the existing 17-55 f/2.8 isn’t interesting as it isn’t that fast compared to a prime, and doesn’t have much zoom range. So I’d rather have for example the 15-85 and a fast prime or two. If this lens manages to come out at f/2.0 or f/1.8 (both scenarios are mentioned in the patent) then that could be prime replacement territory. At least for the budget primes, there would still be a place for ever faster ones of course.
Assuming it’ll be bigger, heavier and more expensive than the 2.8, I’m still very interested.
As for ultra compact wider primes, it’ll be tough on mirror systems. Once you get shorter focal length than the distance between sensor and lens rear, you need to add a load of optics to get around it.
Seems that the block diagram is exactly the same as the current Canon EF-S 17-55mm f/2.8 lens. Doesn’t look too real.
As far as EOS goes, one of the published criteria is that it can fit all EOS cameras. It would take a change of policy, or to do something they have stated they won’t do (not very Japanese), to make an EF-S L lens. Of course they could start ramping out EF-S L versions and charge crop camera owners a lot more, but I doubt if they think the market would bare the cost and they would have to change policy. But if you guys keep asking for it and there is money to be made, who knows…….
If this is real, can truly be a game changer
Wedding folks would love this
Doh,
A 35-100 f2 on a crop camera is, basically, a slight redesign on a 70-200 f2.8 for a ff one, look at the front element sizes and focal length multiplication factors.
Just need a price now.
The EF-S 17-55 2.8 IS USM is a brilliant lens, however if they decide to make a 2.0 I’d consider selling my current 17-55.
Still,I’d rather see a 24-70 2.8 IS L first.
too heavy. to blurry at 2.0. no sale.
If it’s true, they better have a tc to go with it.
There is absolutely nothing that would excite me regarding this lens. Zip! If it’s the aspect of 2.0 buy a prime. If it’s the aspect of Extra-wide to 55 there’s noting to gain except distortion. L’s or nothing.
Huh? 17mm on 1.6x FOVCF is a mere ~27mm on FF35, it’s not really UWA. It’s the aspect of a zoom lens that lets in twice the amount of light than all other “pro-quality” zooms combined with IS that makes this a compelling lens for crop cams. It’s EF-S for the simple reason that it’s more practical to make it that way.
correct!
period
Cause Canon doesn’t want to sound like Nikon… For example: Nikon AF-S 70-200 F2.8 G IF-AD
What kind BS description for a lens is that?
HEHEHE
The release of this lens would make me buy it and a 7D to go with it. I, like others on here, would rather see a 24-70 2.8 IS. But if the 24-70 could somehow be a half stop faster that would be the most amazing.
Before you get excited about bursting bubbles, remember that people here do realize they’re on the Canon Rumors site.
ah, so it’s effective DoF???
I had a 17-55 2.8 IS great sharp fast focusing lens, but after 2 weeks mine was sooo full of dust I returned it and bought a 24-70…and no dust.
Another FF snob. You do know that the current 17-55/2.8 IS kicks the cr*p out of all the FF standard zooms right? :P It’s only the sharpest zoom lens in the entire Canon lineup, together with the now-legendary 70-200/4 IS.
Wow, thanks for taking the time to test this lens for us. Hats off to you.
Oh yeah, since the current 1-kilogram 24-70 w/o IS is still too light for daily use. 24mm on a crop cam would be ~38.4mm, not really that much of a wide angle. EF-S lenses are there for a purpose.
Yet another FF snob.
You wouldn’t wet yourslef if this was FF becuase it would never happen with FF.
Anyone a ideal what the price range 16-55 f2 will fit?
I’d just like to correct jo-1 and Fred. f2.0 on an EF-S lens is FF equivalent of f2.0. Your point is only true for an EF lens used on a crop sensor lens. E.g f2.8 would have a shallower depth of field on a FF than a crop. The 17-55mm f2.8 IS WILL have the same DOF as a 24-70 on a FF. This is because EF-S lenses have the rear element moved towards the sensor. This means that although it’s labelled as a 17-55mm (because that’s the EF equivalent to achieve the same angle of view on a crop body), it is actually a 27 to 88 mm design with a smaller image circle. Therefore at a comparable focal length, marked 50mm on a 24-70mm and marked 31mm on the EF-S, both at f2.8, the DOF WILL be the same. Only if the 24-70 was used on both at 31mm and 50mm would you see a difference in DOF.
Also, as an owner of a 17-55, amazing but not as much colour and contrast as you’d expect from an L.
No it is not. It is a 17-55 with a smaller image circle (than an EF lens of the same focal length range) that replicates the fov of a FF 27-88. The focal length is what is printed on it.
If it was a 27-88 focal length then the fov would be even narrower. Just put a 17-40 on your crop camera and view at 17mm then put your 17-55 on at 17mm, fov is the same.
You are on crack. Not a speck of dust in my 17-55mm in 1.5 years.
The real question is build quality. If it’s still the same build then no thank.