Enhance your photography setup with this high-quality M52 to M42 adapter ring, designed to provide seamless compatibility and precise manual focusing for your camera lenses. Crafted from premium aluminum alloy with advanced anodic oxidation, this adapter ensures durability and long-lasting performance while maintaining a lightweight and compact form factor for easy transport and storage. Key Features: · Broad Compatibility: Compatible with M52 mount lenses and M42 mount adapter rings, enabling a smooth focusing system for a variety of camera setups. · Adjustable Focus Length: Offers an adjustable focus length from 17mm to 31mm, supporting manual focusing to meet diverse photography needs with flexibility and ease. · Ideal Macro Extension Tube: Functions as both an old lens adapter and macro extension tube, perfect for macro photography, digital camera photography, and other creative applications. · Premium Aluminum Alloy Construction: Made with high-quality aluminum alloy and treated with advanced anodic oxidation technology, providing excellent sturdiness and resistance to wear. · Compact and Lightweight Design: With a maximum diameter of 7cm and weighing only 99g, this adapter ring is highly portable and convenient for storage or on-the-go use. Specifications: · Model: M52-M42 (17-31) · Color: Black · Material: Aluminum Alloy · Product Size: 6.5 x 6.5 x 2 cm (2.7 x 2.7 x 0.86 inches) · Product Weight: 64g (2.2 oz) · Package Size: 7.6 x 7.6 x 3 cm (2.9 x 2.9 x 1.1 inches) · Package Weight: 69g (2.4 oz) Package Includes: · 1 x Adapter Ring This M52 to M42 adapter ring is a must-have accessory for photographers seeking enhanced versatility and precise manual focus control. Its robust construction, adjustable focus length, and macro extension capabilities make it an excellent choice for both amateur and professional photographers aiming to capture detailed and high-quality images.