How to repair Canon lens EF 70-300 F/4 - 5.6 L IS defective zoom (used unsupported converter)

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In this video how to repair Canon lens EF 70-300 F4 L IS defective zoom (used unsupported converter)
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» Length: long(27+ Minutes)

#Canon #Canonlens #Repair #70-300
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fixed my one, had the issue that the USM motor was working but not moving the lens unit, aswell when you moved the focusring. In think the "driving fork" or how it's name was somehow disengaged? do you know about such issue?

winters
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Sir How can remove fungus from Canon 70-300mm L is usm lens ? Please.

taposjubaervlogs
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Thank you. I now think i can repair my lens. It doesn't collapse after full zoom unless I hold it upside down. I think it's a loose screw on a guide

davidwrightme