- protects the lens from scratches and extends its service life - provides a snug, secure fit that is not easy to loosen during use - translucent design is simple and elegant, and convenient for observing the lens without removal - compact and lightweight, waterproof, and easy to disassemble for cleaning or storage use scenarios - outdoor photography protect the lens from dust, moisture, and scratches in harsh weather or on dusty shoots, while still allowing quick visual checks through the translucent design - travel and field work take up minimal space with a lightweight, compact protector that remains waterproof during transit and can be disassembled for easy packing - studio and maintenance keep the lens protected on set or during routine care, with the ability to observe the lens through the translucent section without removing the protector