Lens Service
Glass and Coatings
Diaphragms
Focus Mounts
Lubrication
Adjustments
Focal Length and Maximum Aperture
Service
Servicing Autofocus Lens
Disassembly / Reassembly
F/min
Lens ROM
Lens ROM Compatibility
Lens Drive
Analog Motors
Digital Motors
Digital Lens
Factors
Construction Quality
AF Defocus Compensation

Lesson Goal: This is primarily a hands on lab lesson. This lesson will give you experience in disassembling, repairing and reassembling a lens. As in other lab lessons you will be required to apply many of the skills you gained in earlier lessons. When you complete this lesson you should have confidence in your ability to disassemble and reassemble any lens.

The lens selected for this lab is more difficult to disassemble and reassemble then most designs. There is a reason for this. Typically when repairing lens, technicians have only a minimal amount of information, usually the manual is little more then a parts list. Technicians working on lens have to rely heavily on the experience and ingenuity.

Hands On Lab Disassemble a Manual Focus Lens
Disassemble an Autofocus Lens, optional Training DVD Servicing Lens AF/EF Lens (made for Canon Inc.)

Typical Time Required: 20 hours

Updated 2006