DFA90mm/2.8

Started Feb 10, 2012 | Discussions thread
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transeyoshi New Member • Posts: 11
DFA90mm/2.8

Yesterday, I took the photo of DFA90mm/2.8 prototype from the top at CP+ (Cameras show). As you see, there is black ring thing inside the lens. I wonder what it is. Do you have any thoughts? Yoshi

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