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Damage from pre-AI lens?

archivue

Paris, FR
5525 posts

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"RE: Damage from pre-AI lens?"

archivue Registered since 26th Mar 2002
Mon 22-Apr-13 12:59 PM | edited Mon 22-Apr-13 01:01 PM by archivue

It usually breaks or deform the small plastic coupling lever ! When without a lens it should move with a gentle finger push from right to left (looking at the camera) and when released at it's maximum should come back to it's original place (spring loaded).

The fact that it was "stuck" at f/8 means that the lever didn't follow the aperture ring tab (as expected with an pre-AI lens).
Some hope left that the tab being plastic deformed enough to being laterally shoved out of the way in a given position (rotation of the tab)), but a thorough inspection should be made to see if it is a permanent deformation (with even some ripping in the plastic) or if it seemingly escaped the worst.
The second test is to put an AF-D (not AF-S as they don't have an aperture ring nor the mount tabs) or an AI-S lens, mounting it carefully and looking if the plastic tab of the camera follows the tab on the lens mount.
Then by setting on, and moving the aperture wheel to minima and maxima, see if it relates to the lens given apertures? If the camera tab doesn't come back to it's original position (because it's bent), the minimal and maxima aperture won't be perceived by the camera (a f/2 will show as a f/3.5 for example)...

The bad news is that this little plastic tab is related to a more complex mechanism that needs, to be repaired or changed, to open completely the camera !!!

If you only use AF-S lenses you can live with it but you'll miss lots of the older lenses advantages and some resale value !

Per my usual Nikon service center, this is quite frequent, just as broken shutters that closed on the sensor cleaning apparatus (or even fingers) of people cleaning their sensors with batteries not at the proper level (or taking too much time doing it)...

While with a Nikon we can use most of the historical lenses there are some limitations, specially with the pre-AI lenses (though I have several AI'sed that works well) and some lenses have protruding parts that can break the mirror.

Jacques

"Un photographe, finalement, c'est quelqu'un comme les autres, mais qui prend des photos." - Man Ray
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A topic tagged as in need of help Damage from pre-AI lens? [View all] , opm , Mon 22-Apr-13 08:07 AM
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