| Author | Thread | 
		
			|  | 09/09/2013 03:52:06 PM · #1 | 
		| | I have a 5d Markii the back LCD will not come on and when ever i try to take a picture with the lens attached i get an error 01, without the lens the shutter works fine, including the top Lcd. any suggestions | 
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			|  | 09/09/2013 04:39:44 PM · #2 | 
		| | Can you try mounting a different lens? | 
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			|  | 09/09/2013 04:43:37 PM · #3 | 
		| | Sounds to me like a contact problem, maybe the contacts in the camera have shifted/moved or it could be the lens you are using. | 
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			|  | 09/09/2013 05:03:57 PM · #4 | 
		| | Very low battery possibly. | 
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			|  | 09/09/2013 05:10:49 PM · #5 | 
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			|  | 09/09/2013 06:07:33 PM · #6 | 
		| | Error01 is specifically a lens-to-body communication problem. So it makes sense that the error does not occur when no lens is mounted. So try mounting a different lens, after inspecting the contacts to ensure that there is nothing out of place that might damage the lens. If the error still occurs, it's likely the body-side of the contact system. If the error does not occur, it's likely the first lens (the one that generates the error). As for the rear LCD, not a clue, but do investigate the battery situation.
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