CANON - Canon EF 200mm f18L Parts

This comprehensive parts catalog covers the Canon EF 200mm 1:1.8 L USM lens (reference C21-8272) and the Canon ET-123 lens hood (reference C44-8141). The document provides detailed technical breakdowns through precise exploded-view diagrams and exhaustive parts listings for both products. Five pages of disassembly illustrations map every optical and mechanical component: lens barrels, optical groups (G1 through G10), focus rings, diaphragm mechanisms, contact assemblies, and autofocus systems. The parts order listings include over 150 different references, systematically organized by replacement class and page number, documenting both legacy and current variants. The catalog identifies specific components including setscrews, springs, locking rings, lens elements, electrical contacts, PCB assemblies, and housing components. A dedicated section presents ET-123 lens hood components with its dual-position locking system. A cross-sectional optical diagram illustrates the complete arrangement of optical elements throughout the lens. This resource serves as an essential reference for repair technicians, restoration specialists, and collectors seeking detailed architectural documentation of this professional-grade telephoto lens and its accessories.