M42-OM Lens Mount Adapters Rings For OM4/3 E520 E620 Adapters Features: High quality All metal constructions and anodizing aluminium process, for long for time use. The auto focusing will not work with this adapters rings. The adapters no electrical connection and diaphragm & focusing are required to be set by manual. Useful accessory allows you to attach cameras to a telescopes, camera adapters, and other astrophotography accessory. Specification: Product NameM42-OM adapter ring Material: Aluminum Alloy Weight: 0.03kg Applicable models: for Olympus E520, E620, For Panasonic L1 and other 4/3 mount cameras. Package Includes: 1 x Lens adapter ring(others not included) Note: 1.Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!