Question about Quantaray Tech-10 70-300mm f/4.0-5.6 for Canon EOS

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I am receiving a message that the communication between the camera and the lens is faulty. Clean the lens contacts Error 01. Is this a common problem and can I fix it on my own.

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  • kakima May 11, 2010

    That depends. What happens after you clean the electrical contacts on the back of the lens and in the lens mount on the camera body?

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  • Quantaray Master
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With no response in over a month, I assume this is no longer a problem.

Posted on Jun 07, 2010

  • lastonepickd Jan 29, 2011

    I too have the same problem, getting this err01 message, but I did clean the contacts and lens mount and still getting message.

  • kakima Jan 29, 2011

    lastonepickd, either the lens or the camera is faulty. Try a different lens if available, or try the lens on a different camera if possible, to narrow it down.

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1 Answer

Busy and or Error 01


For error message 01 the manual says: Communications between the camera and lens is faulty. Clean lens contacts.
Solve: Clean the electrical contacts on the camera and lens and use a Canon lens.
SO if you are using a different lens or a non Canon lens this could be what is wrong.

If you never changed a lens, it still can be that something went wrong in the communication between the camera and lens. Just careful remove the lens and with a dry and lint free cloth, clean all contacts on the lens and in the camera. While working on the lens, close the camera with the camera cap, or put the camera face down.
Don't use anything sharp while working on a lens or a camera.

Dec 04, 2013 | Canon EOS 60D Digital Camera

1 Answer

Err 01....communication between lens and camera is faulty.Please clean the lens contact...this is the error message...please say a solution..


The contacts are the little gold coloured metal squares that touch between your lens and the body. Clean them with isopropyl alcohol (moistened glasses wipes work well) and see how you go.

Jun 10, 2013 | Canon EOS 1100D / Rebel T3 Digital Camera

1 Answer

Err 1 message


Err 01

Description: The communication between the camera and lens is faulty.
Resolution: Very gently clean the electrical contacts (highlighted in red) on the camera and the lens using a clean and dry cloth.

Mar 24, 2013 | Canon EF 75-300mm Lens

1 Answer

How to repair err 01 on canon 1000d "Communication


So, have you cleaned the contacts? Remove the lens and using a cotton swab lightly dampened with rubbing alcohol, clean the contacts on the lens and the camera body where they meet.

Oct 15, 2011 | Canon EOS Digital Rebel XS / 1000D IS...

1 Answer

Error 01 tamron lens 70-300 mm af 4-5.6 with canon dslr 450d


Error 01 means that communication between camera and lens is faulty. Try to clean lens contacts.

May 28, 2010 | Tamron 70-300mm f/4-5.6 Di Zoom Lens for...

1 Answer

Canon err 01


This error means "Communication between the camera and lens is faulty. Clean the lens contacts." If you are using the same lens on both cameras, the problem is with the metal contacts on the rear of the lens where it communicates with the camera body. You can gently clean these contacts by using a clean pencil eraser. Make sure you hold the lens "bottom down" as you clean it so that the eraser debris falls to the table instead of inside the lens!

Nov 08, 2007 | Canon EOS-1D Mark II Digital Camera

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