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My canon 70d is sending an error message that the lens

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cannot communicate with camera....
my canon 70d is sending an error message that the lens cannot communicate with camera. I have been using my 24-105 f4l lens for over a year now with no problems befor yesterday. How can I fix the problem ?
Submitted: 2 years ago.Category: Camera and Video
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Answered in 51 minutes by:
3/31/2016
Camera and Video Technician: Dan, Camera and Video Technician replied 2 years ago
Dan
Dan, Camera and Video Technician
Category: Camera and Video
Satisfied Customers: 2,527
Experience: 25 Years CCTV, CATV, and SMATV setup and installation.
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Hello and thank you for your question, I look forward to assisting you today. Are you see the error 01 message?

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Customer reply replied 2 years ago
error 01
Camera and Video Technician: Dan, Camera and Video Technician replied 2 years ago

Okay, try this. Power the camera down and remove the lens. With the lens off, power on press the shutter button as though you were taking a picture. Power down then reattach the lens but do not lock it in place and take another picture. Power down then lock the lens then power back up and try shooting normally.

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Customer reply replied 2 years ago
I tried what you suggested and it worked for one frame, on the second shot I got the same error message......error 01
Camera and Video Technician: Dan, Camera and Video Technician replied 2 years ago

Did you clean the contacts on both the lens and camera body using alcohol?

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Camera and Video Technician: Dan, Camera and Video Technician replied 2 years ago

Let me add some additional instructions to the lens reset I first sent. With the lens removed, take two photos then power the camera off. Turn the auto focus off on the lens and reattach it to the camera again without locking it in place and take one photo then check to see if the error is still visible. Turn the camera off and lock the lens in place and turn the auto focus back on and try taking another photo.

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Dan, Camera and Video Technician
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