Freewell 77/82mm magnetic filter kit brand_Panasonic 5 Compact-Macro is a full-frame

5 Compact-Macro is a full-frame macro lens for film and digital EF-mount SLR cameras

I don't know who made this loupe

which is as a rangefinding accessory to a camera

FE/FM series

This is a screw-on 0

Freewell 77/82mm magnetic filter kit brand_Panasonic 5 Compact-Macro is a full-frameThe Freewell magnetic filter system starts with a slim magnetic filter holder that threads into your lens in this case, any lens with an 82mm diameter (or 77mm with the included stepping ring). Filters and lens caps then snap right on, held snug by built in magnets. This kit includes one filter adapter for 82mm lenses, one 77 82mm stepping ring, one UV filter, one circular polarizer, one ND8 (3 stop) ND, one GND1. 2 (4 stop) graduated ND filter, and a