Optomax 75-150mm F3.9 Auto Zoom Lens – M42 Screw Mount This vintage Optomax zoom lens is designed for cameras with an M42 screw mount fitting. It offers a versatile focal range of 75-150mm and a maximum aperture of F3.9, making it suitable for portrait and telephoto photography. Condition: The lens has a visible thumbprint on the inner glass and will require cleaning. It is sold uncleaned and may have additional dust or marks consistent with age and use. Mechanically, the zoom and focus rings appear functional, but the lens has not been tested on a camera. Included: Original protective case for storage and transport. Please Note: This item is sold as-is for restoration, parts, or collectors. Cleaning and servicing will be needed before use.