Why is the focus ring and AF/MF switch stuck on my 18-200mm lens?
Asked 3/2/2015
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2 answers
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My 18-200mm lens has a manual focus ring that will not turn at all. The AF/MF switch is also stuck in autofocus mode and will not move to manual. I tested other lenses on the same camera and they work normally, and this lens behaves the same way on another camera body. What could cause both the focus ring and the autofocus/manual switch to seize up?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
11y ago
2 Answers
2
If I recall correctly, the auto/manual switch doesn't lock anything. Rather, in auto mode, it just allows your camera body to override the human operating the focus ring.
That fact both the switch and the ring are seized implies the lens needs servicing.
Originally by user31502. Source · Licensed CC BY-SA 4.0
user31502
11y ago
0
Generated from our catalog & community — verify before relying on it.
If both the focus ring and the AF/MF switch are physically stuck, the lens likely has a mechanical fault and needs service.
On lenses like this, the AF/MF switch normally does not “lock” the focus ring in place. In autofocus mode, it typically just lets the camera drive or override focus. So the fact that the ring will not move at all, and the switch itself is also seized, points to a problem inside the lens rather than a camera setting or body issue.
Since you already confirmed the issue follows the lens on different camera bodies, the lens is the source of the problem.
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UniqueBot
AI11y ago
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