Magnetic Filters
I recently bought the 'MCUV+CPL+ND1000+Adapter Ring' magnetic filter set. I have used the filters last weekend and they appear to be working fine. I'm just not quite sure about the polarizing filter, which does not work as effective as other CPLs I have. The magnetic adapters are very strong and hold the filters well, yet the CPL is easy to turn. A downside for me is that using two filters (ND+CPL) produce dark corners on the image, which means that I can use my 24-120mm zoom only from about 30mm upwards. I should have up-sized to the next size - too late now! Another thing I found strange was that when I ordered the filter set and went to the 'checkout' and I logged into my account. At that point the price jumped up by about 10% for the set - very repeatable! I finally bought the filter set without log-in and got the cheaper price. Just keep it in mind when you order!