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Old Apr 4, 2006, 4:29 PM   #1
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Other than the 1 stop aperture loss, are there any other issues whem using the canon 1.4x teleconverter with the canon 70-200mm f2.8 lens on my 20D body. Will auto focus be degraded?
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Old Apr 4, 2006, 5:19 PM   #2
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Auto focus will work just like it does without the converter, and if you have the IS version I believe that still works also. The biggest thing you will notice is you will have about 450mm f/4 equivalent lens without having to spend $4000 to $6000 to get it.
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