scott_scheetz Offline Upload & Sell: Off
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This seems to be a relatively common issue. I've had to tighten those screws on my 70-200mm f/2.8 IS mark I several times over the years. Thankfully (at least on the mark 1 and probably also on the mark II and III), it's not connected to the optical assembly, so you don't have to worry about the optics shifting out of place.
- Slide the rubber focus ring off
- turn the focus ring until the holes closest to the front of the lens line up with the screws. (On the Mark 1, there are 3 screws.)
- Peel back the tape (if it's there)
- Carefully tighten the screws (be extra careful if you use a standard phillips instead of a JIS)
- Put the tape back down
- Put the rubber focus ring back on
A super easy and quick job.
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