The H&Y upgrade CPL kit is a kit that allows you to re-use existing square filters you may have and convert them to be magnetic, making it compatible with the H&Y system!
This kit includes:
KH100 filter holder
Circular Polarizing filter
2 frames to convert your existing filters
4 adapter rings - 67/72/77/82mm
The drop in CPL allows you to save times from screwing a CPL onto your lens then adding the filter holder, and also helps you save slots on the filter holder allowing you to add more filters as compared to other systems.
The purpose of a CPL filter is to reduce reflection and glare while enhancing colors and clarity in a picture. There is a small gear which will allow you to rotate precisely the strength of the filter when in use
