The Carl Zeiss Jena Sonnar 40mm f/2.8 lens, also known as the Pentakon 8, is a legendary prime lens renowned for its exceptional optical performance and compact design. Let's explore the features of this lens: Product Features: High-Quality Optics: The Sonnar optical design of the Carl Zeiss Jena Sonnar 40mm f/2.8 lens delivers outstanding image quality with excellent sharpness, contrast, and color rendition. Whether you're shooting landscapes, portraits, or street photography, this lens ensures stunning results. Compact and Lightweight: The lens's compact and lightweight design makes it highly portable and versatile for everyday photography. It's the perfect companion for photographers who value mobility without compromising on image quality. Fast Aperture: With a maximum aperture of f/2.8, the Carl Zeiss Jena Sonnar 40mm lens excels in low-light conditions, allowing you to capture sharp images even in dimly lit environments. The wide aperture also enables you to achieve a shallow depth of field for beautiful background blur. Smooth Manual Focus: The lens features a smooth manual focus ring that allows for precise focusing control. Whether you're capturing portraits or landscapes, you can easily adjust the focus to ensure your subjects are sharp and well-defined. Durable Construction: Built to last, the Carl Zeiss Jena Sonnar 40mm f/2.8 lens features a robust construction that can withstand the demands of regular use. Its durable metal barrel and precision engineering ensure reliability and longevity, making it a valuable investment for any photographer. Condition: Excellent - well-maintained vintage item Product Information: Brand: Carl Zeiss Jena Lens Model: Sonnar 40mm f/2.8 (Pentakon 8) Focal Length: 40mm Maximum Aperture: f/2.8 Lens Mount: M42 mount