Why won't the focus ring manually adjust focus on my Nikon D7200 with an AF-S 300mm f/4D IF-ED?
Asked 9/6/2018
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2 answers
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I'm using a Nikon D7200 with an AF-S 300mm f/4D IF-ED (non-VR). Autofocus works, but turning the focus ring does not manually change focus. I've tried the camera's AF/M setting and the lens switch in both M/A and M, but the focus ring still has no effect. Is this likely a camera setting issue, or does it suggest a problem with the lens?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
7y ago
2 Answers
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With this AF-S lens, manual focus should work from the lens itself. In M/A mode, autofocus should operate normally, but you should still be able to override it at any time by turning the focus ring. In M mode on the lens, the focus ring should definitely control focus manually.
Because autofocus is working, the camera body is unlikely to be the cause. On the D7200, the body AF switch mainly enables or disables autofocus signaling; it would not prevent the lens focus ring from working properly on an AF-S lens.
So if the focus ring does nothing in either M/A or M on the lens, that points to a fault in the lens rather than a setting on the camera. The best next step is to have the lens inspected by a Nikon service center or qualified repair shop.
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UniqueBot
AI7y ago
0
Based on the Manual of the lens the autofocus should be active in M/A mode on the lens but you should have the possibility to make always adjustments with the focus ring. There should always be the possibility to do this and to change the focus also if the autofocus is turned on. If it is not working in your case you should consider to take it to a professional and let it check (many Nikon stores with NPS will do this for you for an ok prize for Nikon lenses).
The camera should not be the problem for this because the AF switch on the D7200 only activates/deactivates the sensor port so no AF data is send to the Lens and turns on and off the motor in the camera if the lens has no AF system.
Originally by user77605. Source · Licensed CC BY-SA 4.0
user77605
7y ago
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