42 Adapter

Imperfect machining, when I screw the adapter ring on my Canon EOS 7D, it did not recognize that a goal was mounted. Obligation to adjust the bayonet ring with a file. This is not normal. After rectification works normally but the diaphragm settings does not position correctly ie visible and centered at the top of the goal. The attractive price does not justify such manufacturing deviations. To the supplier, machining method to review, I do not advise this article .......