This is a single lens side adapter that comes with the HTIII 100mm holder. When shooting with multiple lenses, you can quickly change the holder without having to replace the adapter every time. Works with either HT3/HT2 type.
82mm filter diameter on lens side It can be directly attached to lenses with a 82mm filter diameter, but for other lenses, please use a variety of step-up rings sold separately.
There are no screws on the outer side of the screw, so you cannot install a filter or lens cap.