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Author Topic: Who can clean and repair an old 28-70 2.8?  (Read 5540 times)

Phil L

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Who can clean and repair an old 28-70 2.8?
« on: April 23, 2013, 12:27:11 PM »
I have a 28-70 2.8 that is likely close to 15 years old. Looking through it now is almost like looking through fog.
It's still usable, and AF operates normally, but besides the fog issues I don't feel the images produced are tack sharp.
I would like to get it cleaned, checked, and calibrated and if possible be put back in serviceable condition.
Canon no longer offers support for this older model lens.
Anyone here know of a shop that can get this lens back to decent shape?
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Who can clean and repair an old 28-70 2.8?
« on: April 23, 2013, 12:27:11 PM »

Mt Spokane Photography

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Re: Who can clean and repair an old 28-70 2.8?
« Reply #1 on: April 23, 2013, 01:20:13 PM »
Third party shops like Midwest Camera can do it.  They have Canon equipment to set the lens focus accurately.  There are very few authorized Canon repair facilities with the training and equipment.  They likely have sources for a limited number of parts if you need them.
 
I hope you don't have fungus.  Clean off the rear lens element.  Thats one area where accumulated dirt and dust will be visible in images.  I bought a used lens which the owner was selling due to a foggy image, and cleaning the rear element fixed the issue.

Phil L

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Re: Who can clean and repair an old 28-70 2.8?
« Reply #2 on: April 24, 2013, 07:58:14 PM »
Thanks I will give Midwest a try. I sent in the info for an online estimate.
The rear element on the lens looks very clean and appears normal.
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Surfwooder

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Re: Who can clean and repair an old 28-70 2.8?
« Reply #3 on: April 27, 2013, 04:17:54 PM »
I have a 28-70 2.8 that is likely close to 15 years old. Looking through it now is almost like looking through fog.
It's still usable, and AF operates normally, but besides the fog issues I don't feel the images produced are tack sharp.
I would like to get it cleaned, checked, and calibrated and if possible be put back in serviceable condition.
Canon no longer offers support for this older model lens.
Anyone here know of a shop that can get this lens back to decent shape?

I own a EF 28-70mm f3.5-4.5 usm.  Canon told me the lens was about 20 years old.  Everything on the lens works. The only problem is the AF it seems to be "soft".  I spoke to two repair companies, and Canon, all say they cannot get the parts.  Even using manual focus it still looks "soft" they suggest I dispose of the lens, not worth trying to fix it.

Mt Spokane Photography

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Re: Who can clean and repair an old 28-70 2.8?
« Reply #4 on: April 27, 2013, 06:01:17 PM »
I have a 28-70 2.8 that is likely close to 15 years old. Looking through it now is almost like looking through fog.
It's still usable, and AF operates normally, but besides the fog issues I don't feel the images produced are tack sharp.
I would like to get it cleaned, checked, and calibrated and if possible be put back in serviceable condition.
Canon no longer offers support for this older model lens.
Anyone here know of a shop that can get this lens back to decent shape?


I own a EF 28-70mm f3.5-4.5 usm.  Canon told me the lens was about 20 years old.  Everything on the lens works. The only problem is the AF it seems to be "soft".  I spoke to two repair companies, and Canon, all say they cannot get the parts.  Even using manual focus it still looks "soft" they suggest I dispose of the lens, not worth trying to fix it.

 
Big difference between a "L" lens and the $50 - $100  consumer lens.  It would be much cheaper in your case to just buy another.  The 28-70L is a whole different story.
 
http://www.ebay.com/itm/MINT-Canon-EF-28-70mm-f-3-5-4-6-AF-Zoom-Lens-with-Macro-For-EOS-SLR-Digital-/111057090995?pt=AU_Lenses&hash=item19db84b9b3
 
http://www.ebay.com/itm/Canon-EF-28-70mm-F2-8-L-USM-Lens-28-70-2-8-Exc-condition-/221216288285?pt=Camera_Lenses&hash=item338184ae1d

Harry Muff

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Re: Who can clean and repair an old 28-70 2.8?
« Reply #5 on: April 27, 2013, 06:39:20 PM »
I have one myself. Tried everywhere to get it cleaned and adjusted but they won't touch it because they can't get the parts.


At least it doesn't owe you anything.
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docholliday

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Re: Who can clean and repair an old 28-70 2.8?
« Reply #6 on: April 29, 2013, 06:51:15 AM »
Try calling John at Focal Point in Colorado - www.focalpointlens.com. If it's haze or fungus, he'd be the person to do it without "spare parts".

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Re: Who can clean and repair an old 28-70 2.8?
« Reply #6 on: April 29, 2013, 06:51:15 AM »

Phil L

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Re: Who can clean and repair an old 28-70 2.8?
« Reply #7 on: May 05, 2013, 10:34:04 AM »
I have one myself. Tried everywhere to get it cleaned and adjusted but they won't touch it because they can't get the parts.

At least it doesn't owe you anything.

Well I did send it off to Midwest last week, they indicated they could do a clean and check and possibly resolve the fog issue. They also said that if certain parts were required they likely would not have them and repair would not be possible. If that's the case I guess I'll just be out the postage.
I have yet to hear back from them on the verdict, I will keep you posted.
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Phil L

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Re: Who can clean and repair an old 28-70 2.8?
« Reply #8 on: May 05, 2013, 10:36:32 AM »
docholliday, I will keep that recommendation on hand in case Midwest can't get it done, thanks.
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Mt Spokane Photography

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Re: Who can clean and repair an old 28-70 2.8?
« Reply #9 on: May 05, 2013, 12:32:42 PM »
docholliday, I will keep that recommendation on hand in case Midwest can't get it done, thanks.

If fungus has etched the glass, the lens elements cannot be repaired and recoated in any practical manner.  If Midwest says there is fungus damaging the glass new glass elements will be needed.

Phil L

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Re: Who can clean and repair an old 28-70 2.8?
« Reply #10 on: May 05, 2013, 04:42:42 PM »
Yes I am hoping that fungus will not end up being the issue. In a reply I got initially from Midwest they said that there is a lens group inside this lens that fogs. So maybe (I'm hoping) it could be a simple cleaning situation.
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Mt Spokane Photography

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Re: Who can clean and repair an old 28-70 2.8?
« Reply #11 on: May 05, 2013, 06:16:18 PM »
Yes I am hoping that fungus will not end up being the issue. In a reply I got initially from Midwest they said that there is a lens group inside this lens that fogs. So maybe (I'm hoping) it could be a simple cleaning situation.

They do a ton of them, so its very likely that they are right.

Brand B

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Re: Who can clean and repair an old 28-70 2.8?
« Reply #12 on: May 16, 2013, 08:45:39 PM »
That's too bad.  I have a 12 year old copy of this thing and it is one of my most used lenses, nice and sharp at smaller apertures.  Only issue with it is my 5D3 often thinks it is in manual focus mode when it isn't, cleaned contacts notwithstanding.  I am hoping it lasts until a 24-70 2.8IS exists, and I have money to buy one.

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Re: Who can clean and repair an old 28-70 2.8?
« Reply #12 on: May 16, 2013, 08:45:39 PM »

Phil L

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Re: Who can clean and repair an old 28-70 2.8?
« Reply #13 on: August 05, 2013, 12:53:41 PM »
Well I recently got my 28-70 2.8 back from Midwest. Yes it took a while because they had to locate some parts not available from Canon and I'm glad they persevered because the lens came back looking and operating like new.
I am quite pleased.
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Re: Who can clean and repair an old 28-70 2.8?
« Reply #14 on: August 05, 2013, 01:29:00 PM »
I have a 28-70 2.8 that is likely close to 15 years old. Looking through it now is almost like looking through fog.
It's still usable, and AF operates normally, but besides the fog issues I don't feel the images produced are tack sharp.
I would like to get it cleaned, checked, and calibrated and if possible be put back in serviceable condition.
Canon no longer offers support for this older model lens.
Anyone here know of a shop that can get this lens back to decent shape?


I own a EF 28-70mm f3.5-4.5 usm.  Canon told me the lens was about 20 years old.  Everything on the lens works. The only problem is the AF it seems to be "soft".  I spoke to two repair companies, and Canon, all say they cannot get the parts.  Even using manual focus it still looks "soft" they suggest I dispose of the lens, not worth trying to fix it.

 
Big difference between a "L" lens and the $50 - $100  consumer lens.  It would be much cheaper in your case to just buy another.  The 28-70L is a whole different story.
 
http://www.ebay.com/itm/MINT-Canon-EF-28-70mm-f-3-5-4-6-AF-Zoom-Lens-with-Macro-For-EOS-SLR-Digital-/111057090995?pt=AU_Lenses&hash=item19db84b9b3
 
http://www.ebay.com/itm/Canon-EF-28-70mm-F2-8-L-USM-Lens-28-70-2-8-Exc-condition-/221216288285?pt=Camera_Lenses&hash=item338184ae1d



Good luck to the seller trying to get close to a grand, I think 7-800 would be more likely for a lens that is two generations old
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Re: Who can clean and repair an old 28-70 2.8?
« Reply #14 on: August 05, 2013, 01:29:00 PM »