sigma 90mm f2.8 macro

Started Nov 28, 2009 | Discussions thread
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ken Contributing Member • Posts: 619
sigma 90mm f2.8 macro

hi need help with a sigma 90mm f2.8 macro lens on a 7d,the auto focus works but the aperture doesnt seem to work it is always f2.8 and if i set the camera to manual and try to adjust it the camera gives me a error code 01

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