CANON - Canon EF 24mm f28 Parts

Official Canon parts catalog for the EF 24mm f/2.8 lens (reference C21-5301), designed as a complete technical reference for authorized service centers and repair technicians. This four-page parts list and assembly documentation breaks down the entire optical assembly into individual components, with precise Canon part numbers for over 80 elements. The catalog includes detailed exploded diagrams and cross-sectional views of the lens groups, internal mechanical structures, and autofocus mechanisms. Optical elements are specified by their individual designations (CY1-2284, CY1-2285, CY1-2287, CN2-1227, CP2-1229), while mechanical and electrical components such as the focusing unit (CG9-5312), AF unit (CG2-0363), and power diaphragm (YG2-0200) are clearly identified with corresponding assembly locations. The schematics illustrate both manual and autofocus operation, lens group positioning, and EF mount integration. Each component entry includes part classification, required quantity per assembly, and reference page location. This service manual is essential for sourcing replacement parts or performing a complete lens reconstruction, and serves as the authoritative technical reference for optical technicians requiring accurate component identification and procurement data.