Despite some questionable reviews I decided to take a chance. I had to save my money and came back with Oakley lenses for my M Frames. As mentioned in other reviews these lenses have a very poor fit in their frames. They are very loose, even close to falling out more than once. In the time I could wear it and keep it in a mount, the optics were what you'd expect from a cheap interchangeable lens. Below average at best. There is little distortion with fast movements, resulting in poor clarity. With these lenses you get what you pay for. Cheap price but also cheap quality.
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