This adapter ring is mainly used for connecting the "MD Mount Lens" to "cameras with Micro 4/3 Mount", easy and smooth to install, remove and operate lens. Features: This lens mount adapter ring is mainly used for connecting the "MD Mount Lens" to "cameras with Micro 4/3 Mount". Designed for Panasonic G1 G2 G3 G5 GH1 GH2 GH3 GF1 GF2 GF3 GF5 GF6 GX1 GX2 and Olympus E-P1 E-P2 E-P3 E-P5 E-PL1 E-PL2 E-PL3 EPL5 EM-P1 EM-P2 etc. Completely manual control, manual focus and manual exposure. There is no electrical connection on the ring so diaphragm control of the lens is set manually. It can focus to infinity. Easy and smooth to install, remove and operate lens. Equipped with lock and stop pin. Made of high-quality material, durable for long time use. Specifications: Material: Metal Compatible lens: for MD Mount Lens Compatible camera: for Micro 4/3 Mount camera Item size: Approx. 6 * 6 * 2.8cm / 2.4 * 2.4 * 1.1in Item weight: Approx. 85g / 3oz Package size: Approx. 6.8 * 6.8 * 3.5cm / 2.7 * 2.7 * 1.4in Package weight: Approx. 90g / 3.2oz Package List: 1 * Adapter Ring