ぽめぽめ 3 I needed a thin filter as much as possible in order to have less non-nating. I compared it with Nano T-Pro, the thin filter of B+W. There is no specific thickness in the description of this lens, but it is similar to any other filter in person. It's a shame that it's not the filter I want. As a result, you should have bought Nano T-Pro, even if it was expensive. Why don't you explain the exact number when it's called Slim Filter?