What a video right! So what is going on here? First, there are just a few basic tools needed for most lens repairs. They include a power screwdriver, a manual screwdriver (with swappable tips) and tweezers. Some of the other tool that might be needed are a spanner wrench (for element removal), various specialty tools (for removing collars, rollers etc.) and a small hammer and anvil (for straightening parts).
I know this seems like a short list but it isn’t the tools that make or break quality repairs. It is the knowledge, experience and expertise combined with a meticulous attention to detail. When repairs like the one in the above video are completed there are many tests that one must do before it can be considered finished. Focus accuracy is, of course, of utmost importance; this is done by way of taking shots and using test equipment specifically designed to check focus. The other tests include testing the diaphragm operation (aperture), zoom operation, auto focus & manual focus operation and the lens to body communication.
It is important to understand that there are a few things we are very careful to watch out for while performing these repairs. Never, ever touch the surface of any of the internal lens elements. The alignment of the internal elements is critical so it attention to make sure they stay positioned correctly. Although it is next to impossible to keep ALL dust out of lenses (especially zoom lenses) maintaining a work area free from contraband and particulates is a high priority. We discussed earlier that having a little dust in/on your lens will not affect your images. But, when dust gathers on the smaller internal elements the possibility that it can have an impact goes up.
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