Question about Canon EF 600mm f/4L Lens

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Lens repair Some water got in between the first and second lens and messed with the coating. It looks like a rainbow through the center of the lens. How should I proceed in fixing this lens? Does the first lens need to be replaced or can it be cleaned/repaired? Who would I contact to make this repair?

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Re: Lens repair

It would not be advisable for you to try and clean this yourself. Special tools are required to remove the optics safely. Canon USA will charge a fortune to make this kind of repair. I suggest you use the search on this site to find a repair person in your area. The proper facility will be able to clean your glass, rather than replace it.

Posted on Jan 04, 2008

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How to fix error 001 in canon lens

The Canon Err 01 is called Lens communication.
The lens has lost communication with the camera, or vice versa. This can be caused by dirt or grease on the gold coated contacts. On the lens or in the camera.
Try cleaning the contacts, with a dry cloth or cotton swabs. Don't use any sharp tools or force. To pinpoint where the error is, you could try to place another lens. If the error disappears most likely the first lens caused the problem. If the error stays, you should suspect the camera.
If you only have the problem with one lens, and the contacts are clean, contact a certified Canon repair centre.

Jul 10, 2014 | Camera Lenses

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Images has a lot of haze

Haze can be from the lens or the camera sensor in some extreme conditions.

You didn't say the camera model - but I'll assume a modern, DSLR type with removable lenses. First, try a different lens. If the resulting picture is clear, the problem is with the lens. If the problem still exists, then the problem is with the camera. You may have some luck cleaning the sensor of the camera. This is a *very* delicate procedure and is done with some very specific tools and supplies for the job. The wrong procedure or use of improper cleaning supplies can render your camera useless.

The same holds true for the lens. These are delicate, precision optics and should not be serviced by end users. You should inspect the lens by holding the aperture fully open and look through it front to back and back to front. Gently clean the front and rear glass with lens cleaner and leans cleaning tissues. Do not rub hard. The coating on "Single Coated" and "Multi-Coated" optics can be damaged if rubbing too hard.

If the source of the haze is still present (either in pictures or with the ***** eye looking through the lens, it should be returned to the factory or authorized repairer for a repair estimate.

i hope this helps & good luck!

Sep 22, 2011 | Sigma Camera Lenses

2 Answers

I have a sigma 18-35. It has not been used in a while and mold has formed on the inside of the lens. How can I open it up to clean?

to remove the front lens you will see a ring that you can peel off and you will see
4 screws take them off and the front lens will come off

Oct 12, 2010 | Sigma 18-35mm f/3.5-4.5 Lens

2 Answers

I think the protective layer of my lens is damaged, possibly from photographing in a hair salon (Bride getting ready) and just being around hairspray. I have cleaned the lens with lens solution, a cotton...

It seems that hairspray has hardened on your lens.I would at least try some isopropyl alcohol(rubbing alcohol).It won't hurt the glass.If that doesn't work goo-gone should and should not hurt the glass but I am not sure about the plastic.I think it will be okay,just read the precautions.It sounds like if you don't try these at least,you're going to need a new lens anyway?
Good luck! Greg

Aug 17, 2010 | Canon 35mm f/1.4L EF USM Autofocus Lens

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Permanent smudge or scratch in coating of front element. Price of a new element? Is the element able to be re-coated?

Re-coating is not usually possible and will cost more than a new lens element.

The front element is one of the most expensive parts of the entire lens so replacement is often not cost effective. Fitting it and ensuring correct optical alignment is not a DIY job.

The real question is whether the marking is readily visible in the images and if so whether it's a minor artefact which can be edited out? If so, then repairs to the lens are simply not worth doing.

Jun 15, 2010 | Canon EF 14mm f/2.8L USM Ultra Wide-Angle...

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Where do I send my quantaray 70-300mm for repair

You may have two options.
First, contact the place where you bought the lens from. Quantaray is mainly a Ritz Cameras brand.
Secondly, you can use third party repair shops.
I purchase some of my lenses from KEH. []. They have a repair shop for cameras and lenses.
Attached is their FAQ site.

Hope this helps.

Apr 01, 2010 | Quantaray 100-300mm F4.5-6.7 Zoom Lens for...

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Mold got into the lense while living in the USVI. Best way to remove it?

Mold is a problem with all modern lens that have optical coatings. The coatings provide food for the mold to grow on and a surface for it to attach to. Anytime you look at used equipment, this is one of the primary issues that need to be checked, remove the lens from the camera body and with the apperature wide open, hold the lens up to a light or the sky and inspect it by looking thur the lens and at the internal surfaces.

Regarding those lens that I have had this happen with, the solution was to sent them back to the factory or a factory certified repair center to be totally disassembled and cleaned, however, this cost MORE than the lens will bring on any used market and with the damage to the coatings that the mold does, the quality of the lens is seriously comprimised.

Jan 26, 2010 | Canon Camera Lenses

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My canon 24-105 lens was dropped in water and I want to service it. (The Canon service centre says they can fix it but at a high cost.) is there an assembly diagram or instructions

This is not a DIY repair. You need to have access to lens collimators and other specialist tools and also need to be able to remove and replace lens cement to have any chance of tackling this successfully.

The cost is high not only because some parts might need to be replaced but because the lens needs to be stripped down almost totally to ensure that no moisture remains trapped inside. Some of the materials used in the lens construction tend to absorb water and will either need to be replaced or removed and dessicated before being replaced. When originally built, most of the lens was assembled by robots but it's far more difficult and precise for a skilled human to dismantle and correctly reassemble a lens which will already have seen some wear and tear.

If every last drop of moisture is not removed then you can at the very least expect your lens to fog up regularly and to rapidly suffer the onset of lens fungus which will permanently damage the glass coatings. You'll also find that electronic parts will fail due to corrosion.

Sorry to be so negative but I've repaired (and also failed to repair) enough lenses in my time to have a good idea of where the limits lie in lens repair.

Your lens will cost around £800 to replace, so even if repairs cost half that then it's money well spent. Botched DIY repairs will leave the lens either worthless or completely uneconomic to repair.

Aug 22, 2009 | Canon 24-105mm f/4L IS USM EF Lens

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Fungus inside lens

if it's mild then it won't have any appreciable effect on your photographs, so leave it until it's worse. The fungus can be slowed or killed by sunlight or by exposing the lens element to ultra violet light.

If it's really bad then you have to decide whether it's worth a professional strip down and clean. You'd have realistic two choices: to remove the fungus and replace all lubricants and canada balsam lens cement with modern antifungal equivalents but leave the damaged lens coatings as they are or to do the same and also have affected lens groups replaced with new ones or have the old ones re-coated. The first option is expensive, the second option is very expensive.

Jul 31, 2009 | Mamiya Macro 140mm f/4.5 L-A for RZ67

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