This item makes it much simpler to change filters when using a camera lens. It also connects to off axis guiders and can simplify changing filters while using your telescope! The only caution is that the magnets that hold in the filter are not super strong. So use some painters tape to make sure the filter does not drop out during use of this item. The quality of this item is great for the price!
Works with my 14mm Samyang lens but when i put a filter in the focus changes. So if your using it to shoot wide field shots with camera lenses then you will have a hard time getting focus since infinity is not infinity anymore. Going to try my 400mm Sigma lens next. Wish me luck. I think I might need it. lol