Having problems with your Sigma Digital Cameras ?

I have a Sigma 18-200 3.5-6.3 lense and use it on a Canon xTi Rebel. The lense is a year old and have recently noticed that at the 18mm focal length that the f stop no longer opens up to 3.5 but only to f4. I have not dropped or jarred the lense. Also I have noticed that at the 200mm focal length the f stop opens up to 5.6 not the 6.3. Any advise would be appreciated. Jim Caldwell


Answers :

Replace the lens and you should be all set
Yes its the lens problem and contacting sigma will definately help you if they provide u with the replacement lens.and also check out with your friends lens and let us know.\015\012keep us updated.\015\012thanks.
Repair Help & Product Troubleshooting for Sigma Digital Cameras

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I have a Sigma 18-200 3.5-6.3 lense and use it on a Canon xTi Rebel. The lense is a year old and have recently noticed that at the 18mm focal length that the f stop no longer opens up to 3.5 but only to f4. I have not dropped or jarred the lense. Also I have noticed that at the 200mm focal length the f stop opens up to 5.6 not the 6.3. Any advise would be appreciated. Jim Caldwell


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