New M42 mount adapter. Used old lenses are becoming increasingly popular among camera enthusiasts using mirrorless cameras and digital SLR cameras. Among them, the M42 screw mount lens is arguably the representative of old lenses. When using an M42 mount lens with a mirrorless camera or SLR camera, a mount adapter is always required between the lens and the body. Lens side: M42 screw mount Body side: M4/3 mount This is a mount adapter for M4/3 mirrorless cameras and can be attached to Olympus mirrorless cameras and Panasonic mirrorless cameras. ◎M4/3 mount models Olympus mirrorless cameras (PEN E-P7, E-PL10 series, OM-D E-M10 series, etc.), Panasonic mirrorless cameras (LUMIX series) ◎Main famous M42 mount lenses ・PENTAX Super Takumar 55mm F1.8 ・PENTAX Super Takumar 28mm F3.5 ・Helios-44 58mm F2 ・Yashica Auto Yashinon DX 50mm F1.7 If you are unsure whether it can be attached to your mirrorless camera, please feel free to ask. The stopping position of the mount adapter can be adjusted with the included tool, allowing you to adjust the direction of the lens's distance scale. Negotiations for price reduction are not possible. Thank you for your understanding.