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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 26 Jul 2012 (Thursday) 18:52
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why doesn't this 40mm pancake issue get more attention?

 
Charlie
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Jul 27, 2012 02:34 |  #16

GregoryF wrote in post #14774838 (external link)
Probably because it is a Canon. If it was a third party lens, it would suddenly be a huge issue.

DreDaze wrote in post #14774904 (external link)
because it's cheap?

Valencia Photography wrote in post #14775319 (external link)
Because it's such a new lens. And there has been so much hype with the new mirrorless cameras and slim lenses. Same deal with iPhones and such. The problems get downplayed.

bw!

the problem lies in a mixture here somewhere. IF I had the issue, it would be like the sticky AF of my 50 1.4, which I absolutely dread using... dread so much that I got the 1.2 ;)

I've missed a few moments with the sticky AF for sure.


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gratchie
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Jul 27, 2012 02:55 |  #17

Invertalon wrote in post #14775247 (external link)
I have used my pancake quite a bit and yet to have this issue at all. Mounts just fine and works perfectly.

It seems to be when people push on the front of the lens (the extended part when focusing) causing it to lock up.

Yep. It happened to me once because i pushed the front part manually. Now that i know how to avoid it, the issue never came up again

I love my 40mm stm. Best bang for the buck.


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wayne.robbins
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Jul 28, 2012 18:34 |  #18

I had a problem once with my Canon 70-200 IS II. It would not focus- didn't even look like it was trying. I pulled it off- and put it back on- and the problem hasn't came back. I thought it was a fluke. That's never happened with my Sigma. Now I am starting to connect the dots- a lot of Canon's apparently have focusing issues.

Now, I see I should start a thread, and start collecting serial numbers of working and non-working 70-200 IS II's. Canon apparently has a reliability problem with that model and we should make a point of it and gather the info- and push Canon for a fix. Please don't include the last four digits of the serial number - for security reasons.


EOS 5D III, EOS 7D,EOS Rebel T4i, Canon 70-200 f/2.8 IS II, Canon 24-105L, Canon 18-135 IS STM, 1.4x TC III, 2.0x TC III, Σ 50mm f/1.4, Σ 17-50 OS, Σ 70-200 OS, Σ 50-500 OS, Σ 1.4x TC, Σ 2.0x TC, 580EXII(3), Canon SX-40, Canon S100
Fond memories: Rebel T1i, Canon 18-55 IS, Canon 55-250 IS, 18-135 IS (Given to a good home)...

  
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Charlie
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Jul 29, 2012 19:57 |  #19

wayne.robbins wrote in post #14782991 (external link)
I had a problem once with my Canon 70-200 IS II. It would not focus- didn't even look like it was trying. I pulled it off- and put it back on- and the problem hasn't came back. I thought it was a fluke. That's never happened with my Sigma. Now I am starting to connect the dots- a lot of Canon's apparently have focusing issues.

Now, I see I should start a thread, and start collecting serial numbers of working and non-working 70-200 IS II's. Canon apparently has a reliability problem with that model and we should make a point of it and gather the info- and push Canon for a fix. Please don't include the last four digits of the serial number - for security reasons.

according to lensrental, the coveted 70-200 mk2 had a high rate of problems. The 17-55 was another one with high problems, but fixed with silent updates. If you're under warranty, send it to canon, I'm sure they have the fix.


Sony A7riii/A9 - FE 12-24/4 - FE 24-240 - SY 24/2.8 - FE 28/2 - FE 35/2.8 - FE 50/1.8 - FE 85/1.8 - EF 135/1.8 Art - F 600/5.6 - CZ 100-300 - Astro Rok 14/2.8 - Tamron 17-28/2.8 - 28-75/2.8 RXD, 70-200/2.8 VC

  
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jbrand
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Aug 03, 2012 21:27 |  #20

KenjiS wrote in post #14775388 (external link)
I point to what someone said up there, if this was a Sigma lens, you bet thered be people screaming about it

This is priceless - and true. I also have the 40, and yet to have a single issue.


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Gripped 7D, Gripped 450D, Rokinon 8mm 3.5, Sigma 20mm 1.8, Sigma 30mm 1.4, Canon 40mm 2.8, Sigma 50mm 1.4, Canon 85mm 1.8, Canon 200mm f2.8L, Canon 70-200mm f2.8L, Canon 300 f4L, Kenko 1.4 TC and tubes, S95, AT-1, and a bunch of other stuff.

  
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Wissigle
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Aug 03, 2012 22:59 |  #21

Because it happens rarely and can be fixed in 5 seconds. Plus, it doesn't impact build quality, image quality or AF accuracy, which are the most important lens considerations generally.


Wissigle
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modchild
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Aug 04, 2012 10:09 |  #22

I've used it on a 60D, 650D and a 5D3 so far and it's never happened to me yet. I can't think it'd be a major problem if it did.


EOS 5D MkIII, EOS 70D, EOS 650D, EOS M, Canon 24-70 f2.8L MkII, Canon 70-200 f2.8L IS MkII, Canon 100 f2.8L Macro, Canon 17-40 f4L IS, Canon 24-105 f4L IS, Canon 300 f4L IS, Canon 85 f1.8, Canon 50 f1.4, Canon 40 f2.8 STM, Canon 35 f2, Sigma 150-500 OS, Tamron 18-270 PZD, Tamron 28-300 VC, 580EX II Flash, Nissin Di866 MkII Flash, Sigma EM 140 Macro Flash and other bits.

  
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RTPVid
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Aug 08, 2012 11:19 |  #23

Canon acknowledges it is a real problem.

canon-ef-40mm-f2-8-stm-product-advisory (external link)

Note that merely putting the lens cap on can initiate the malfunction.


Tom

  
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SoCalTiger
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Aug 08, 2012 11:44 |  #24

pkilla wrote in post #14774723 (external link)
Cause is not a real problem I never had to dismount my lens to get AF to work I love this lens I got no complaints and no problems maybe is your camera!

You mean except for the fact that Canon admitted it was an issue and is releasing a firmware update this month to fix it?


Laurence (external link) :: 6D + Lens

  
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why doesn't this 40mm pancake issue get more attention?
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