
In the foreword I will say that I will be returning this item. I'm using a Sony A7M2 with an old Zeiss 135mm f3.5 lens. When I screwed the lens to the mount, I noticed that they had a small gap (less than a millimeter). I let this slide but found I had blurry images. Yes, I know it's an MF lens, but it looked great in preview. The images were still blurry. After some research and throwing away my A$$ I found myself with a shutter speed of 1/30 or 1/60. Everything is fine with stabilized lenses. But with this lens I needed 1/100 or higher. After sharing the pictures, it became clear. So this is exactly what I need. I am using a 50 year old lens on a 3 month old camera. FYI: In my research I determined the focal plane for my lens and this adapter is within 0.5mm of the M42 focal plane recommendations. A great adapter at a great price. So grab one of these and start shopping for great old vintage lenses!


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