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Introduction |
| This guide will show you how to partially disassemble this lens to be able to replace the Zooming Key. There will also be a number of other parts which locations, how to remove them, and how reinstall them will be shown during this guide. Notable parts include the Main PCB Assembly and the IS Lens Assembly. | | | A dust blower is recommended to blow dust off of any internal lens elements or parts during this process. Additionally, a clean microfiber cloth is good to have incase you accidentally touch any of the internal lens elements and need to clean off your fingerprint from the lens. | | | ***Finding a replacement zooming key:*** | | At the time of making this guide, I could not locate anywhere to buy a replacement zooming key for this lens, with the part number YA2-4750. I ended up discovering that the zooming key of a Canon EF 70-200mm f/2.8 L8L USM lens could work (the non-IS version of this lens), which has a part number of YA2-2054. I took this part out of a broken lens, but I also did find that part available online for purchase. | | | It's important to note that the part is not a perfect fit though. The alternate zooming key extends exactly 1mm too far to fit. However, I was able to grind it down using a dremel and an aluminum oxide grinding wheel. After grinding it down 1mm, it was a perfect fit. |
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