Description: Applicable lens: for M42mm thread series lens Applicable cameras: for Olympus E series cameras, such as E520 E620 E410 E510 E 3 for Panasonic L1 and other 4/3 thread cameras. Material: Metal ring adapter, high strength, impact resistance, twist and pressure. Features: full manual control, manual focus, focus Note: When using the Filter Ring Adapter for the first time, please turn on the "No Lens Release Shutter" option in the menu, otherwise it will not be recognized. Specification: Model: M42 4/3 Type:Ring Adapter Colour: Black Applicable models: 4/3 SLR Material: metal Mount size: 30mm and below Size Chart: 30mm/1.18inch Package Includes: 1 Piece Ring Filter Adapter Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!