Autofocus Not Working
Nikon DSLR / Mirrorless Camera
Severity: ModerateWhat Does This Error Mean?
Nikon autofocus problems are most often caused by the lens AF/M switch being set to M (manual), the AF mode not matching the scene, or insufficient light for the AF system to find contrast.
Affected Models
- Nikon D3500
- Nikon D5600
- Nikon D7500
- Nikon D850
- Nikon Z5
- Nikon Z6 II
- Nikon Z7 II
Common Causes
- Lens AF/M switch set to M (Manual)
- Camera AF mode set incorrectly for the subject
- Scene too dark or lacking contrast
- Subject too close for the lens minimum focus distance
- Dirty lens contacts preventing AF motor commands
- Body and lens firmware not compatible or not updated
How to Fix It
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Check the AF/M switch on the lens.
Almost all Nikon AF lenses have a switch on the barrel marked A/M or AF/M. Ensure it is in the A or AF position. If set to M, the lens focuses manually only, regardless of what the camera is set to.
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Check the autofocus mode on the camera body.
Nikon cameras have a mode selector on the body (AF-S, AF-C, AF-A, MF). For still subjects use AF-S (single servo). For moving subjects use AF-C (continuous servo). Make sure the body mode selector is not set to MF.
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Select a single AF point.
In auto-area AF mode, the camera may focus on the wrong subject. Switching to a single central AF point and pointing directly at the subject helps the camera lock on correctly. This is especially useful for portraits or small subjects.
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Improve lighting conditions.
Nikon phase-detection AF works best with adequate light. In dim conditions, enable the built-in AF assist illuminator (Menu → Custom Settings → a5 → Built-in AF-assist illuminator → On). This projects a pattern to help the AF system find focus in the dark.
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Update firmware.
Nikon Z cameras in particular receive frequent firmware updates that significantly improve autofocus subject detection and tracking. Check nikonimglib.com and install the latest firmware for both the camera body and any Z lenses.
Frequently Asked Questions
Why does my Nikon Z camera sometimes miss focus on faces?
Face and eye detection AF on Nikon Z cameras is very effective but requires adequate light and a face that is at least partially visible and facing the camera. Ensure 3D Tracking or Wide-Area AF with subject detection is enabled in the AF area mode settings. Also ensure the camera firmware is updated, as newer firmware versions substantially improve the subject detection algorithm.