Before attaching Mini QD Loops directly to strap lugs, read this important post: Strap Lug Inserts: What are they and why should I care?
Unless you’re 100% certain that your camera has smooth lugs, it’s best that you attach Mini QD Loops via split rings, as outlined here.
1. Thread the cord loop through the strap lug. It might help to use a piece of string or dental floss.
2. Thread the mini quick-disconnect through the loop.
3. Pull the mini quick-disconnect to cinch the loop.
Found on: most Canon; entry- and mid-level Nikon; Fujifilm X-H2(S), X-E4, GFX 50S (connect strap to Fuji-supplied attachment clips), X-T100, X-A Series; vintage Rolleiflex. Also known as slotted or rectangular mount.
Compatible with: flat mount F1
Found on: any camera that came with triangular or round split rings (remove them); most Fujifilm; pro-level Nikon; Leica; Olympus; Sony; most vintage 35mm cameras; Also known as round or ring mount.
Compatible with: lug mount F1 & F1ultralight