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PostPosted: Tue Jun 25, 2013 10:19 am 
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Joined: Tue Jun 25, 2013 10:13 am
Posts: 1
What teleconverter can I use with my Canon EFS 55-250mm f/4-5.6 IS lens and Canon T3i body?
Want to be able to use autofocus particularly in brigher light.


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PostPosted: Tue Jun 25, 2013 10:29 am 
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Joined: Fri Jun 22, 2012 8:42 am
Posts: 218
Location: Almere, The Netherlands
I am not sure, but I think you can't use a teleconverter with that lens. Another problem: even if you could use it, your camera won't be able to use autofocus then, since the aperture decreases to a maximum of f8. Only the 5D Mark III and the 1D-camera's can still focus with f8.

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