Do correct me if I got it wrong
For the Lee SW 150 system, to use it on other Lee adaptors, one must either already own those adaptors or have to purchase them on top of the SW 150 system adaptor ring that does not come with the SW 150 filter kit.
Hi Luminare,
A bit confused with your question , so i hope i am replying to what you want to know. The SW150 comes with a few metal rings. one set you can mount permanently on the 14-24 hood. The other which hold the square filters (Part A) can dismantle then keep. So let's say you want to use on a 77mm lens..you need to buy the 77mm adapter. which mount on the 77mm lens. then your Part A can mount onto the adapter.
this video should better explain.
[video=youtube;BVPVBR3CKRk]http://www.youtube.com/watch?v=BVPVBR3CKRk[/video]