[ADJUSTABLE APERTURE RANGE] Achieve precise control over depth of field and exposure with an adjustable aperture range from 5mm to 26mm, tailored for diverse photographic scenarios. [ROBUST CONSTRUCTION] Crafted from aviation-grade metal, this adapter ring is built to withstand demanding conditions, making it a reliable choice for both amateur and professional photographers. [EFFORTLESS OPERATION] The intuitive handle mechanism allows for smooth adjustments to the iris diaphragm diameter, enabling seamless fine-tuning without disrupting your creative flow. [COMPATIBILITY] This lens reversing adapter is designed to work with PVS 14 for VISION devices and other photographic equipment, enhancing its versatility across various applications. [COMPACT AND LIGHTWEIGHT] Its compact and lightweight design makes it easy to carry in your camera bag, minimal additional weight during shoots.