If you see this in a Nikon F prism viewfinder - you have no real chance of repair

forest bagger said:

If you see such a cloudy spot through the eyepiece

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and the cloudy spot is visible twice from the ground glass side

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you have no real chance of removing it.

It is the decomposing foam strip that has attacked the black paint of the prism.


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You would have to remove the prism, remove all the paint, clean and repaint the prism, and replace any deteriorated foam strips when reassembling the viewfinder.

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Dan Daniel said:

Viewfinders are highly overrated. Learn to look at the scene without a viewfinder, and use the viewfinder to confirm edges, focus, maybe timing if that is part of the image. Smudges, desilvering, dust... disappear in actual usage. If you are looking at the desilvering, you aren't using the camera as it is intended... (semi-joking, quite serious, but also completely off-base. desilvered prism, whatever the cause, are painful to see)

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