Enhance your photography with this high-quality Focusing Helicoid Adapter, designed to provide precise focus control for lenses without built-in focusing systems. Perfect for macro photography and lens magnification, this adapter offers a smooth and adjustable focusing range from 17mm (0.7 inches) to 31mm (1.2 inches), allowing for a 14mm (0.6 inches) extension to achieve fine focus adjustments with ease. Key Features: · Adjustable Focusing Range: Provides a versatile focus extension from 17mm to 31mm, enabling precise focusing and improved macro photography capabilities. · Universal Thread Compatibility: Equipped with a female M42 thread mount and a male M39 thread mount, ensuring broad compatibility and easy transfer between lenses and camera bodies. · Durable Aluminum Alloy Construction: Crafted from premium aluminum alloy with a black anodized finish, offering excellent durability, a comfortable hand feel, and long-lasting performance. · Anti-Reflective Inner Wall: The matte inner surface reduces internal reflections, minimizing stray light interference and enhancing image quality. · Converts Old Lenses for Digital Use: Enables the use of vintage or idle lenses on modern digital cameras by providing a reliable focusing mechanism. · Lightweight Design: Weighing approximately 82 grams, this adapter is easy to handle and carry without adding significant bulk to your camera setup. Specifications: · Item Type: Focusing Helicoid Adapter · Material: Aluminum Alloy · Color: Black · Weight: Approx. 82g · Focus Range: 17-31 mm (0.7-1.2 in) · Interface: Female M42 thread mount, Male M39 thread mount Package Includes: · 1 x Focusing Helicoid Adapter This Focusing Helicoid Adapter is an essential accessory for photographers looking to expand their creative possibilities by adapting lenses for precise focusing and macro photography. Its robust build and versatile compatibility make it a valuable addition to any camera gear collection.