I also don't remove it and it actually protected my lens when it fell. The collar knob cracked and I had to super glue it to be able loosen or tighten the ring properly. Does anyone know if canon sells that as a spare part?
Bodies: Canon 6D, 70D, T2i gripped, EOS 5, EOS 100, EOS M
Lenses:EF 24-105 F4L, EF 70-200 F2.8L mkII, EF 100 F2.8L, EF 50 F1.8, EF-S 18-55mm, EF 28-80 USM, EF-M 22, Rokinon 8mm HD Fisheye, M mount adapter
Other : 540EZ, 320EX, 430EX II, Yongnuo triggers & strobist stuff