Iris Diaphragm 1.5mm to 25mm Adjustable Aperture, M42 to M42 Thread Optical Iris Aperture for Camera Microscope with 14 Blades Aluminum Alloy Stainless Steel Construction

Item Type: Iris DiaphragmMaterial: Alumnium alloy, stainless steel. Product Inner Hole Diameter: Approx. 1.5 ~ 25mm / 0.06 ~ 0.98inproduct Outer Hole Diameter: Approx. 55mm / 2.17inProduct thickness: Approx. 17.5mm / 0.69inBlades: 14pcs blade. Product Thread: M42 to M42Package List：1 xIris Diaphragm

• Precise Aperture Control: This iris diaphragm offers smooth and accurate adjustment from 1.5mm to 25mm inner diameter using a convenient handle, allowing you to fine-tune light transmission in your optical system for optimal image clarity and exposure control.
• Durable Dual-Material Build: Constructed with high-strength aluminum alloy body and stainless steel blades, this iris diaphragm resists rust and while maintaining lightweight performance, ensuring long-term reliability in demanding optical environments.
• Versatile Compatibility: Designed with M42 to M42 threading, this adjustable iris diaphragm seamlessly integrates into cameras, microscopes, telescopes, and other optical instruments, enhancing functionality across scientific, industrial, and photography applications.
• High-Quality Blade Design: Featuring 14 precision-engineered stainless steel blades, the iris diaphragm creates a near-circular aperture opening that minimizes diffraction and delivers clean, consistent light control for professional-grade optical results.
• Compact and Lightweight Profile: With an outer diameter of 55mm and thickness of just 17.5mm, this iris diaphragm adds minimal bulk to your setup while providing robust performance—ideal for space-sensitive optical assemblies and portable imaging systems.