1、Perfect Compatibility: This lens adapter is designed to fit for Pentax PK mount lenses onto M4/3 mount cameras seamlessly, making it a fantastic photography accessory. 2、Full Manual Control: Operate with full manual functionality, including manual focus and manual aperture adjustment. The adapter lacks electronic contacts, so autofocus is not supported. 3、Aluminum Alloy Construction: Crafted from aluminum alloy with an anodized finish, this lens converter ring is finely made and built to last, ensuring longevity and durability. 4、Precise Exposure Control: Enables manual exposure and aperture priority exposure with the camera body, allowing for precise control over settings and infinite focus. 5、Secure Fit: The lens mount adapter tightly integrates with the camera mount, providing a perfect match for smoother installation and easy lens attachment and removal.