December 22, 2014, 12:57:03 PM

Poll

Do you have a problem with your Canon EF24-70 f/2.8L II ?

Lens Clicking
5 (11.6%)
Filter comes into contact with Front Element
0 (0%)
Front Element Coating issue
1 (2.3%)
Air Bubbles inside the lens
1 (2.3%)
No issues yet
36 (83.7%)

Total Members Voted: 42

Author Topic: 24-70 2.8 L II summary of defects  (Read 2719 times)

tron

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24-70 2.8 L II summary of defects
« on: February 26, 2014, 09:23:10 AM »
Hello,

having heard of so many issues with Canon's 24-70 f/2.8L II I thought of issuing a poll.

This is the first time I create one so apologies if I have missed something.

I assumed that no one would have more than 1 issue so as to prevent someone from voting both no issues and something else.

Any comments/suggestions are welcome  :)

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24-70 2.8 L II summary of defects
« on: February 26, 2014, 09:23:10 AM »

tron

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Re: 24-70 2.8 L II summary of defects
« Reply #1 on: February 26, 2014, 09:23:50 AM »
I will start with my vote. My 24-70 2.8 L II seems OK ... for now.

docsmith

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Re: 24-70 2.8 L II summary of defects
« Reply #2 on: February 28, 2014, 10:24:38 AM »
I had one lens with a bubble and then different lenses with clicking when I tried to buy this lens last fall.  Since I could only vote once, I voted for the bubble....

mackguyver

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Re: 24-70 2.8 L II summary of defects
« Reply #3 on: February 28, 2014, 10:47:57 AM »
So far, so good...the only 'defect' is when I forget to unlock the zoom lock switch, if I use it ;D

neuroanatomist

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Re: 24-70 2.8 L II summary of defects
« Reply #4 on: February 28, 2014, 11:21:13 AM »
So far, so good...the only 'defect' is when I forget to unlock the zoom lock switch, if I use it ;D

Ditto…except that I don't think I've ever engaged the zoom lock.
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mackguyver

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Re: 24-70 2.8 L II summary of defects
« Reply #5 on: February 28, 2014, 11:25:07 AM »
So far, so good...the only 'defect' is when I forget to unlock the zoom lock switch, if I use it ;D

Ditto…except that I don't think I've ever engaged the zoom lock.
I've done it by accident about half a dozen times, but have used it when traveling over rough roads and on a nasty prop-plane flight.  Canon says it's supposed to protect the AF when traveling.

neuroanatomist

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Re: 24-70 2.8 L II summary of defects
« Reply #6 on: February 28, 2014, 11:34:57 AM »
Canon says it's supposed to protect the AF when traveling.

How does locking the zoom barrel from extending protect the AF?
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Re: 24-70 2.8 L II summary of defects
« Reply #6 on: February 28, 2014, 11:34:57 AM »

mackguyver

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Re: 24-70 2.8 L II summary of defects
« Reply #7 on: February 28, 2014, 11:44:56 AM »
Canon says it's supposed to protect the AF when traveling.

How does locking the zoom barrel from extending protect the AF?
I'm not sure, and will have to look for the source, but I know I read a CPN article or something where they say that the locking mechanism was designed to protect the lens while in transit.  Most people assumed it was to lock it closed, but apparently that's not the case.  I can't seem to find it at the moment but will keep looking...

mackguyver

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Re: 24-70 2.8 L II summary of defects
« Reply #8 on: February 28, 2014, 12:27:24 PM »
Here's one reference I found (from the Canon EF 24-70mm f/2.8L II USM Press Release), but I know I read it in an interview with one of Canon's engineers or product specialists as well:

Quote
A new Zoom Lock lever also enables photographers to lock the zoom position at the extreme wide end to prevent damage to the lens in transit


neuroanatomist

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Re: 24-70 2.8 L II summary of defects
« Reply #9 on: February 28, 2014, 12:35:19 PM »
Here's one reference I found (from the Canon EF 24-70mm f/2.8L II USM Press Release), but I know I read it in an interview with one of Canon's engineers or product specialists as well:

Quote
A new Zoom Lock lever also enables photographers to lock the zoom position at the extreme wide end to prevent damage to the lens in transit

Preventing damage to the lens I get…just not how it would specifically protect the AF group and/or motor.
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mackguyver

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Re: 24-70 2.8 L II summary of defects
« Reply #10 on: February 28, 2014, 12:39:29 PM »
Here's one reference I found (from the Canon EF 24-70mm f/2.8L II USM Press Release), but I know I read it in an interview with one of Canon's engineers or product specialists as well:

Quote
A new Zoom Lock lever also enables photographers to lock the zoom position at the extreme wide end to prevent damage to the lens in transit

Preventing damage to the lens I get…just not how it would specifically protect the AF group and/or motor.
If I remember, it was something about premature wear from the lens moving around/vibrating and I think it was something their war photographers had complained about.  It might have been in one of their videos...I wish I could remember because it surprised me.  The lens manual and every other thing says that the lock switch is just to keep the lens closed while walking around, but the press release and this other source said otherwise.  I'll keep looking.

neuroanatomist

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Re: 24-70 2.8 L II summary of defects
« Reply #11 on: February 28, 2014, 12:40:48 PM »
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tron

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Re: 24-70 2.8 L II summary of defects
« Reply #12 on: February 28, 2014, 01:05:27 PM »
I had one lens with a bubble and then different lenses with clicking when I tried to buy this lens last fall.  Since I could only vote once, I voted for the bubble....
Sorry for that, I was trying to find a way to avoid inconsistency (say select both a problem and no problem) but I guess some inconsistency is inevitable. For example someone may had a faulty lens which returned to get another. They could select the specific problem but then the 100% correct would be to select both.

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Re: 24-70 2.8 L II summary of defects
« Reply #12 on: February 28, 2014, 01:05:27 PM »

docsmith

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Re: 24-70 2.8 L II summary of defects
« Reply #13 on: February 28, 2014, 03:08:18 PM »
I had one lens with a bubble and then different lenses with clicking when I tried to buy this lens last fall.  Since I could only vote once, I voted for the bubble....
Sorry for that, I was trying to find a way to avoid inconsistency (say select both a problem and no problem) but I guess some inconsistency is inevitable. For example someone may had a faulty lens which returned to get another. They could select the specific problem but then the 100% correct would be to select both.

Hey, no problem.  I am actually glad that you did the poll.  It is interesting.  Lensrentals states that all lenses have a "3% out of box" problem rate.  So it will be interesting to see how close the 24-70II gets to the ~97% mark of people not having issues. 

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Re: 24-70 2.8 L II summary of defects
« Reply #14 on: March 01, 2014, 08:49:33 PM »
I am on my fifth copy. It clicks...sometimes...other times not. I don't care anymore.

I have extended warranty, so if it breaks it breaks and I'll either get it repaired for free or have it replaced.


At least this copy doesn't have a decentered element.
Cameras: 1DX, Canon M. Lenses: Canon EF 24-70mm f/2.8L II, Canon EF 70-200 f/2.8L IS II,  Canon EF 100mm f/2.8L Macro, Canon EF 2X III, Tokina SD 16-28mm f/2.8 FX, Canon M 18-55mm IS, Canon M 22mm. Flashes MT-24 580EXII

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Re: 24-70 2.8 L II summary of defects
« Reply #14 on: March 01, 2014, 08:49:33 PM »