Hi i have recently bought a macro extension tube for my nikon d5100 with 18-55mm lens? But for some reason after adding the extension tube between the camera n lens its dark n blur when i look through it and on the camera screen it says lens not fitted or attached. Any idea? Please advice. How do i make it work and how i set it up interms of getting rid of the drk blurness n even if i have to use it in manual mode but how exactly? Even if i manual focus its blurr so i am guessing there is no way its compatible with mine.cheers
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