Marks on front element RF28-70 f2 L

Marc dbr

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Hello,

On my RF28-70 f2 front element I noticed some marks and spots scattered on the left side of it. When wiping off with a microfiber cloth and later with an alcohol pad and again with microfiber I noticed they became more noticeable... :(

What do I do? is there something I can try? If I look super closely they don't seem to be smudges but rather spots with micro scratching which I think has affected one of the coating layers...

I am based in the UAE (Dubai) and as far as I know they have a third party repair center only, which I find the staff to be very unqualified based on previous R5 servicing jobs.

Please advise what to do from here, I would be open to travel to a more reputable canon repair center across Europe this summer if that is a recommendation.

Marc





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My Flickr Portfolio: https://www.flickr.com/photos/148263466@N03/albums
 
Update:

After some searching I found this thread of another 28-70 f2 that insured major damage to the coating, just by simply wiping the front element. Is this a case that would fall under EU warranty if the lens is only 2.5 years old?


I have been using an array of L lenses over 10 years, and some of them like the 35 f1.4 II been using them in the harshest conditions and wiping them clean even with a shirt at times and have never seen coating peel off like this...

Thanks
 
May I use your picture and upload it here? https://kameratrollet.se/canon-lens-coating-falling-off/

Everyone has paid around $600 for a front replacement, but I actually got a message last week from an owner who got the front element replaced for free. He wrote to Canon and explained clearly with links to other bad 28-70 samples. He also wrote that he had used protecting filter etc.
 
Hello Kameratrollet,

Thanks for your comment, and forwarding the link with the resources. Its scary to see how such an expensive lens has such strong documentation for the coating issues...

Of course you may use my image and use case of the lens damage.

If I may ask, what Canon support contact should I call or write to lay this case with?

I am registered with CPS Europe but based in Dubai so I don't know how it will go in having Canon CPS repair it here vs being covered by warranty and treated as a customer under the Canon Europe umbrella...

Thanks,

Marc
 
Hello Kameratrollet,

Thanks for your comment, and forwarding the link with the resources. Its scary to see how such an expensive lens has such strong documentation for the coating issues...

Of course you may use my image and use case of the lens damage.

If I may ask, what Canon support contact should I call or write to lay this case with?

I am registered with CPS Europe but based in Dubai so I don't know how it will go in having Canon CPS repair it here vs being covered by warranty and treated as a customer under the Canon Europe umbrella...

Thanks,

Marc
Thanks! My page updated with your picture.

I suppose a trip to Europe may cost you the same amount, around $600?
 
Just received a reply from a technical center from Canon Middle East. They reviewed the lens and got back to me saying that "fungus developed on the outside, affecting the coating and going inside the lens elements" how is this a fair description knowing that the coatings are clearly falling off in multiple places. Is this Canon trying to get out of their duty to address quality issues?
 
We do get higher humidity in summer but my shoots are always indoors, with AC preventing all kinds of humidity. Also any of my other lenses should have shown the same effects over the years.
 
Just received a reply from a technical center from Canon Middle East. They reviewed the lens and got back to me saying that "fungus developed on the outside, affecting the coating and going inside the lens elements" how is this a fair description knowing that the coatings are clearly falling off in multiple places. Is this Canon trying to get out of their duty to address quality issues?
It certainly looks like that. That was also their initial behavior when the 1D3 AF was clearly erraticc and we received weird explanations in stead of Canon admitting their problem.

Non of the pictures I have seen of the front elements look like fungus and I haven’t yet jeard about fungus on the outside of lens elements. I would share the many pictures shared of damaged front elements and ask them to explain the widespread “fungus” attacts.
 
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Hello Kameratrollet,

I am in the middle of a feud with Canon over this issue because they refuse to admit the production fault and I am not paying for a 600$ repair each 2 years on this 28-70 lens. Could you get me in touch with the user who go their lens serviced by Canon? It would mean a lot to me to finally get this over with…

thanks! Marc
 
Hi. I am the user who was able to get my lens repaired at no charge.. Essentially I had a script that I read and I kept asking to be escalated to a higher manager until I reached someone with the ability to make the call

First thing I recommend you do is to sign up for Canon professional services... The silver membership is free.. As a part of this membership our inquiries get priority above non members... So this helped me get my issue escalated

https://www.usa.canon.com/pro/canon...WQaGBJuy0tPIi1gkWAqBdDpXinH0jCaAUrZ8FtbJI1ep8

When you call Canon to dispute the repair quote for your 28-70mm RF lens, it's essential to be clear, concise, and assertive. Here are some steps and points you can use in your conversation:

1. **Introduction and Background:**

- Introduce yourself and briefly explain the situation.

- Mention your history with Canon lenses and that you have never experienced this issue with any other lens despite using the same cleaning method.

2. **Describe the Problem:**

- Explain the specific issue with the 28-70mm RF lens, focusing on the optical glass coating rubbing off.

- Mention that you have found multiple reports online of other users experiencing the same issue, indicating a potential manufacturing defect.

3. **Highlight the Cost and Warranty:**

- State the cost of the lens when you purchased it and the high quote for the repair.

- Emphasize that it is unreasonable to charge 25% of the lens’s cost for what appears to be a widespread manufacturing issue.

4. **Evidence from Other Users:**

- Reference the forums and pictures from other users showing the same problem.

- Mention that some forums even list serial numbers of affected lenses, indicating that the problem is not isolated.

5. **Your Expectations:**

- Clearly state that you believe this is a manufacturing defect and that Canon should take responsibility for it.

- Request that Canon covers the repair cost or provides a replacement lens without charge.

6. **Reiterate Your Loyalty:**

- Mention your long-standing loyalty to Canon and your investment in their products.

- Express that you are seeking a fair resolution to maintain your trust in their brand.

7. **Remain Polite but Firm:**

- Stay calm and polite throughout the conversation.

- Be firm in your request and reiterate that you believe this is a responsibility Canon should acknowledge and address.

Also reiterate that you keep a protective filter on your lens and be sure to ship it in with said filter

Here is a possible script for your call:

---

**Introduction and Background:**

"Hello, my name is Marc, and I have been a loyal Canon customer for many years. I own several Canon RF lenses, including the 16mm prime, 35mm prime, 85mm RF, 70-200, 100mm, and the 50mm. Recently, I have encountered an issue with my 28-70mm RF lens where the optical glass coating is rubbing off."

**Describe the Problem:**

"I have researched online and found multiple reports from other users experiencing the same issue, with pictures showing similar smudging problems. This suggests that the issue is not due to user error but rather a potential manufacturing defect."

**Highlight the Cost and Warranty:**

"I paid $2700 for this lens, and I am now being quoted $615 for a repair, which is nearly 25% of the original cost. This seems unreasonable, especially considering the widespread nature of the issue."

**Evidence from Other Users:**

"Many forums, including ones listing serial numbers of affected lenses, confirm that this problem is not isolated. It appears to be a manufacturing defect that Canon has not officially acknowledged."

**Your Expectations:**

"Given the circumstances, I believe Canon should take responsibility for this defect. I am requesting that Canon covers the repair cost or provides a replacement lens at no charge."

**Reiterate Your Loyalty:**

"I have always trusted Canon products and have made significant investments in your lenses. I am seeking a fair resolution to maintain my trust in your brand."

**Remain Polite but Firm:**

"I hope we can resolve this issue amicably, and I look forward to hearing how Canon can assist in addressing this manufacturing defect."

---

By presenting your case clearly and assertively while remaining polite, you increase the likelihood of a positive outcome. Good luck with your call!

The first representative offered me a 40% discount.. But I wouldn't accept that either

I kept asking for a higher manager until they finally relented.

I got a few lower level customer service people to acknowledge that they personally have gotten this complaint before but they acknowledge that Cano Nas a company has yet to take accountability. But once I knew I had the lower rep on my side.. I kept asking to be escalated to a higher manager. The representative have no power to make the repair free. Only a manager does
 

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