CANON - canon ef50mmf1.8II disassembly

Complete disassembly and reassembly guide for the Canon EF 50mm f/1.8 II lens. This workshop manual walks you through every step of taking the lens apart—from removing the back cover to accessing the aperture stop—with full-color photographs highlighting the exact areas where pressure and precision matter most. You'll find detailed instructions on workspace setup, locating and removing the microscrews, separating the inner cover, detaching adhesive-bonded side covers, and methodically disassembling both the inner and outer tubes into their three core components. The guide covers the AF/MF switch mechanism and aperture stop operation in technical detail, specifies the 20mm aperture opening diameter, and provides complete reverse-sequence reassembly instructions so you can put it back together correctly. Safety warnings throughout alert you to potential risks to cables, circuit boards, and lens glass. The manual also demonstrates practical modification applications including coded aperture patterns and color-filtered aperture setups. Whether you're an optical researcher or working on advanced lens customization, this detailed service manual gives you the information and visual reference you need for confident, methodical disassembly work.