HELP! EOS 400D Autofocus not working?

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FrenchieBoy

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Pete
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I have a Canon 400D outfit that I am very happy with which is about 3 years old. Up to fairly recently all has been well but I have now noticed that the autofocus on the Tamron 70-300 Zoom lens has stopped working and I have to use the manual focus when I use this lens. However when I fit the Canon EFS 18-55 lens the autofocus works fine.
I am not any sort of an expert on this but it "suggests" to me that as all is well with the EFS 18-55 lens then the fault lies in my Tamron 70-300 lens rather than in the camera body.
Has anyone with a little more knowledge experienced this and if so could they confirm my suspicions that it is the lens rather than the camera body that is at fault.
 
Just Dave said:
Youve not switched AF have you on the Tamron and try cleaning the connection terminals on the lens
Click to expand...

With the switch set to AF when I go to take any photo the lens will just focus out to either maximum focus or minimum focus.
I have tried cleaning the contacts several times with an alcohol based cleaning fluid.
 
Last edited:
Just Dave said:
Can you try the lens on a different camera, it does sound like the lens though as your others working OK
Click to expand...

Unfortunately to do that I would need to find another EOS DSLR owner local to me or go to a camera shop.
 
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