That is the shape the curtain string makes when it slackens up and hangs into
the frame during exposure.
John
Camtech
Joel Wilcox wrote:
> Dear Olympus Shooters:
>
> I have some shots from a recent shoot with odd, half-moon like distortions
> coming out of the camera-top border of the shots. If you want to see, go to
>
> http://www.uiowa.edu/~uaactr/polterimage.htm
>
> I've created a temporary page with a horizontal and a vertical image, each
> with the offending half-moon poltergeist. In instances I think the
> equipment is the same: OM-2S, Zuiko 35-70 3.5-4.6 zoom, Vivitar polarizer,
> lens hood.
>
> The half-moon thing will look sort of like a processing bubble to some, or
> as though the film were somehow creased or dimpled. It is certainly not the
> latter; the relatively consistent shape of the defect (and probably its
> size too) would seem to suggest it is not a processing malfunction.
>
> There's a hot button to my email address on the www page.
>
> Thanks in advance for any suggestions and/or remedies.
>
> Best,
>
> Joel
>
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