JJC RN-DC67A adapter ring (adapter, filter adapter) 67mm for Canon Powershot SX50 HS SX40 HS SX30 SX20 SX10 IS FA-DC67A (Electronics)
The adapter ring is doing what he should. Fits exactly. However, he sits so tightly that I had to use a drop Ballistol Oil to untwist the adapter ring. -> Actually, it was less than a drop. It is enough here really a breath.