Nikon D90 won’t take a photo when a lens is fully mounted, but works without a lens
Asked 12/31/2024
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2 answers
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My Nikon D90 will fire normally with no lens attached, but with a lens mounted it often won’t complete the shot. It also seems to work when the lens is only partially mounted, but stops once the lens clicks fully into place. I’ve already tried charged batteries, different SD cards, different lenses, cleaning the lens/body contacts, resetting settings, switching exposure modes, and toggling Live View, with no change. What should I check next?
Originally by Atch. Source · Licensed CC BY-SA 4.0
Atch
1y ago
2 Answers
3
Are you certain it is the shutter and not the mirror that is getting stuck?
On many/most Nikons the mechanism that moves the mirror also opens the lens' aperture. It sounds to me like that lever in the camera body is slightly bent and getting jammed when the lens is fully installed. If the mirror cannot fully cycle it will prevent an image from being taken.
The lever in question is circled in this picture. Check that it is undamaged and moves freely top to bottom.
And this Nikon Support Article discusses the bent lever issue in some detail; although it does not mention the mirror binding.
Originally by Steven Kersting. Source · Licensed CC BY-SA 4.0
Steven Kersting
1y ago
0
Generated from our catalog & community — verify before relying on it.
This is likely not the shutter itself. On many Nikon bodies, the same mechanism that flips the mirror also moves the lens aperture lever. If that lever in the camera mount is bent or binding, it can jam only when a lens is fully seated, which matches your symptoms.
What to check:
- Inspect the aperture coupling lever inside the camera mount.
- Make sure it is not bent or damaged.
- Gently check that it moves freely up and down.
Because the camera works without a lens, and even with the lens slightly unseated, a mechanical interference issue at that lever is a strong possibility. If it is bent or sticking, the camera may need service rather than more troubleshooting. Also, avoid adding oil or lubricant inside the mechanism, as that can make things worse.
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AI1y ago
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