Mechanical design with excellent vibration and impact resistance Mechanical design with improved water and dust resistance Special coating improves water repellency and cleaning of the lens surface Replaceable iris plate Uses double nut method for focus adjustment Adhesively fixes all glass Focus length (mm): 3.5 Image size (mm): 7.2 x 5.4 (φ9) 焦点范围(mm):100 〜∞ 外部尺寸(mm):φ43x 38.3 C安装量:螺丝 - 螺丝架,带法兰的17.526mm镜头:1/1.8英寸固定焦点