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Author Topic: Canon Officially Acknowledges Lens ID Issue  (Read 25409 times)

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Canon Officially Acknowledges Lens ID Issue
« on: February 24, 2011, 04:52:53 PM »

We’ve reported previously that certain Tamron lenses do not work fully with the Canon EOS 7D. The outer crosstype AF points do not work properly. It was discovered that Tamron used Lens ID’s that Canon no longer supported.


Canon made official what we already knew.


The following cameras are affected.



  • EOS 7D

  • EOS 60D

  • EOS 50D

  • EOS 40D


The following Canon lenses are affected



  • EF 35-80 mm 1:4-5,6

  • EF 35-80 mm 1:4-5,6 II

  • EF 35-80 mm 1:4-5,6 III

  • EF 35-80 mm 1:4-5,6 USM

  • EF 35-105 mm 1:4-5,6

  • EF 35-105 mm 1:4-5,6 USM

  • EF 80-200 mm 1:4,5-5,6 II

  • EF 80-200 mm 1:4,5-5,6 USM


The following Tamron lenses are affected



  • 17-50 f/2.8 VC

  • 60 f/2 Macro

  • 70-200 f/2.8

  • 10-24 f/3.5-4.5


cr


« Last Edit: February 25, 2011, 12:21:25 AM by Canon Rumors »
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Canon Officially Acknowledges Lens ID Issue
« on: February 24, 2011, 04:52:53 PM »

unruled

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Re: Canon Officially Acknowledges Lens ID Issue
« Reply #1 on: February 24, 2011, 05:32:04 PM »
damn, I own a 40D and 17-50mm 2.8 tamron, (not VC version)... I guess Im safe? :)

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Re: Canon Officially Acknowledges Lens ID Issue
« Reply #2 on: February 24, 2011, 05:33:52 PM »
Yes, third party lenses can bite you, now, or in the future.  I've four sigma lenses that worked on my film DSLR's and just give error 99 on my Canon DSLR's.  I keep them around to remind me as to what can happen.

Tokina, so far has not caused me a problem.

Wahoowa

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Re: Canon Officially Acknowledges Lens ID Issue
« Reply #3 on: February 24, 2011, 06:44:52 PM »
This is one of the reasons that I stick to Canon lenses.

stoneysnapper

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Re: Canon Officially Acknowledges Lens ID Issue
« Reply #4 on: February 24, 2011, 07:07:06 PM »
Where in the Canon page does it mention the issue with Tamron lenses? I have the 17-50 F2.8 VC which was faulty in the first place however this just compounds the issue.
1Dx, 7D, 24-105, 70-200 IS II, 16-35 II, 100mm Macro IS, 85mm F1.2L II, 24mm F2.8 IS, 18-200, Sigma 1.4x, Canon 2x iii, 430EXII, 600EX- RT, ST-E3 Fuji x100s and X-T1

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Re: Canon Officially Acknowledges Lens ID Issue
« Reply #5 on: February 24, 2011, 07:35:37 PM »
Where in the Canon page does it mention the issue with Tamron lenses? I have the 17-50 F2.8 VC which was faulty in the first place however this just compounds the issue.

Its a issue previously mentioned.

See http://www.canonrumors.com/2010/11/tamron-lens-phenomenon/

ssbuchanan

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Re: Canon Officially Acknowledges Lens ID Issue
« Reply #6 on: February 24, 2011, 08:19:33 PM »
Very strange. I have a 40D, and thought that the 70-200 focused BETTER on the 40D than the 1DMkIV, yet the 40D is listed as effected, and the 1D is not?
Looks like I might need to test a bit more, and I guess the long term solution is to upgrade the Tamron to one of those ugly white lenses... :/

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Re: Canon Officially Acknowledges Lens ID Issue
« Reply #6 on: February 24, 2011, 08:19:33 PM »

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Re: Canon Officially Acknowledges Lens ID Issue
« Reply #7 on: February 24, 2011, 08:47:21 PM »
Very strange. I have a 40D, and thought that the 70-200 focused BETTER on the 40D than the 1DMkIV, yet the 40D is listed as effected, and the 1D is not?
Looks like I might need to test a bit more, and I guess the long term solution is to upgrade the Tamron to one of those ugly white lenses... :/

The issue only happens with the listed lenses, its not a issue with the 70-200mm lenses.

http://www.microsofttranslator.com/bv.aspx?ref=Internal&from=&to=en&a=http://cweb.canon.jp/e-support/products/eos-d/110224eosd.html

EYEONE

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Re: Canon Officially Acknowledges Lens ID Issue
« Reply #8 on: February 24, 2011, 10:50:53 PM »
Is this why my 60mm f2.0 doesn't focus worth a crap on my 7D?
Esp, when it is very out of focus to begin with.

Ah, I was gonna sell it anyway.
Canon 5D Mark III w/BG-E11, Canon 7D w/BG-E7: EF 24-70mm f.2.8L, EF 70-200mm f2.8L IS II, EF 40mm f2.8 Pancake STM, Speedlite 430EXII + 430EXI, Canon EOS 3

ssbuchanan

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Re: Canon Officially Acknowledges Lens ID Issue
« Reply #9 on: February 24, 2011, 10:53:39 PM »
The issue only happens with the listed lenses, its not a issue with the 70-200mm lenses.

http://www.microsofttranslator.com/bv.aspx?ref=Internal&from=&to=en&a=http://cweb.canon.jp/e-support/products/eos-d/110224eosd.html

Funny, I could've sworn:
Quote
The following Tamron lenses are affected

    * 17-50 f/2.8 VC
    * 60 f/2 Macro
    * 70-200 f/2.8
    * 10-24 f/3.5-4.5

the 70-200 was listed there. The translated site won't load for me :(
« Last Edit: February 25, 2011, 12:00:11 AM by ssbuchanan »

torger

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Re: Canon Officially Acknowledges Lens ID Issue
« Reply #10 on: February 25, 2011, 01:27:24 AM »
Sigh... Canon (and all other camera manufacturers) really like to treat customers like crap. They keep their RAW formats secret so they have to be reverse engineered (with potential risk to get sued), or even worse encrypt them (Nikon). And they more or less deliberately mess up camera-lens communication to make things hard for third-party lens manufacturers. Oh, camera-computer communication is a secret too. In all, it's a scandal (the RAW format thing is the worst part though if you ask me), they act like coward companies that gives a damn in their customers' interests as long as they sell.

Still, there are lots of more or less fanatic fans out there... I don't understand it, Canon and Nikon certainly don't deserve it.

Canonista

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Re: Canon Officially Acknowledges Lens ID Issue
« Reply #11 on: February 25, 2011, 01:40:25 AM »
It has now been reported that Tamron hired a group of electricians from the local Teamsters to do a complete lab test in their immaculately patinated garage space to put to rest the age-old conundrum: Is it the lens or the camera? The electricians first located and repurchased from disgruntled lens owners of non-working Tamron lenses using IOUs and coupons for future home repairs. A sample Tamron 17-50 f/2.8 VC lens was then bench tested in the following fastidious manner: To secure the lens, it was mounted to a precision Craftsman vice; the demonstration 7D camera body was strategically hung from the rafters, positioned within 6 inches of the lens using non-conductive quality plastic coat hangers and the ubiquitous silver duct tape. Two 12 gauge copper grounding wires of equal length were then wave soldered between the electrical terminals on the camera body and lens. The experiment commenced when the camera was activated, and the shutter release half depressed. At this point, a jolt of energy ripped through the wires, and an electrical arc was instantly formed between the steel lens flange and the metal lens mount. This phenomenon caused the built-in flash of the camera to reflexively spring open, and to spontaneously fire off a burst of light for an indeterminably long duration. At this point, an acrid odor directed the electricians attention to the pentaprism, which was quickly reduced to a lump of melted plastic and glass before their eyes. Throughout this episode, the lens remained pristine and unmolested by this violent occurrence. From this extraordinary experiment, the electricians deduced that the camera body was incompatible with the lens, calling into question the design integrity of the Canon 7D. Tamron publishes the lab results on a well-known camera web site, setting off all manner of consternation and hand-wringing among owners of Canon cameras. Some owners threaten violent reprisals against Canon products, while others vow to uphold and defend Canon's honor to the bitter, bloody end.

J-Man

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Re: Canon Officially Acknowledges Lens ID Issue
« Reply #12 on: February 25, 2011, 01:49:41 AM »
The problem as I see it is, the lenses listed when mounted on the bodies listed lose the faster than 5.6 outer AF points.
Looks like Canons decision to cut back on AF system quality is yet again biting them in the rear.

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Re: Canon Officially Acknowledges Lens ID Issue
« Reply #12 on: February 25, 2011, 01:49:41 AM »

Cornell

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Re: Canon Officially Acknowledges Lens ID Issue
« Reply #13 on: February 25, 2011, 04:16:56 AM »
This is one of the reasons that I stick to Canon lenses.

Certain Canon lenses also have the same issue.

Cornell

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Re: Canon Officially Acknowledges Lens ID Issue
« Reply #14 on: February 25, 2011, 04:20:33 AM »
Where in the Canon page does it mention the issue with Tamron lenses? I have the 17-50 F2.8 VC which was faulty in the first place however this just compounds the issue.

Its a issue previously mentioned.

See http://www.canonrumors.com/2010/11/tamron-lens-phenomenon/

Previously mentioning an issue is not the same as Canon acknowledging. Canon acknowledged the issue for certain Canon lenses, only.

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Re: Canon Officially Acknowledges Lens ID Issue
« Reply #14 on: February 25, 2011, 04:20:33 AM »