This was the ultimate converter setup down set I needed. I have a 82mm ND that i wanted to use with all my lenses. Instead of buying different expensive NDs I invested in one variable ND and these rings. Gets the job done pretty good.
These step up/step down rings are very handy for helping me to reduce the amount a filters that I need to buy. I will not be using all of these rings at the moment, the ones that I do need are still worth the price of the rings. In the future, I might need some of the other rings, so I will have them on hand.Derek Munro,Guelph, Ontario.
They seem well made and are easy to use. It's possible to avoid the "cone effect" if you need to use 3 or more rings by reversing every second one (attach it from the inside instead of the outside). I bought these to adapt a Raynox macro lens filter to various size lenses and so far so good! The only thing missing are rings for the 43 mm to 49 mm and 49 to 52 mm steps ... if you have a Canon 50 mm 1.8 STM lens with a 49 mm filter ring, you would not do well with this product.