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Review Summary
2011-09-20T21:00:00
With the cost of a good polarizer it's great to be able to use one on multiple lenses. This does the trick.
Paul G.
2010-04-10T21:00:00
I purchased to use in conjunction with a reversing ring and a 50mm lens so I can mount the 50mm lens backwards. The ring mounts to the reversing ring and to the camera with out any difficulty.
davesalpha
Allows you to use larger size filters on lenses with a smaller diameter thread. The first number is the size that screws into the lense, the second number is the filter size.