I just received the Carry Speed magnetic mount CPL.
The mechanical design is OK. You are suppose to put a sticky metal ring on the front of the lens that is very low profile and that is what the magnetic filter attaches to. The filter itself doesn\'t rotate so I guess you are suppose to turn it while off the camera and then slap it in place? I\'d never try twisting it on the lens barrel - these extending lens elements are definitely not designed for such loads.
I, however, never actually tried this. The filter itself is a hunk of junk. Despite their site claiming it to be \"multilayer coated\" it most definitely is not. It is wickedly reflective. And actually it is slightly more reflective on the camera side than on the front!!!! If they single coated it they did it on the wrong side!!! Also the quarter wave plate is misaligned. Viewing from the \"wrong way\" instead of seeing no polarizing effect (as you should with a CPL) you see a mild effect with the reflection shifting from blue to yellow.
Anyway - it is trash glass. Don\'t buy it.
Ken
Sep 06, 2012 at 05:02 PM
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