Cotty <[EMAIL PROTECTED]> wrote:

>Right, my Mrs took her MX out on a photo trip to Oxford with one of her
>students and his Minolta <blech>. She was disappointed to discover that
>one of the rolls of film had about a dozen frames with nothing exposed!
>Not even the hint of a frame line, nothing on the neg, not even a hint of
>light. Yet after that, the exposures are fine. What gives?
>
>She remembers taking the shots, so she could see the subjects and so the
>lens cap was not in place on the front <g>. Nothing overtly untoward was
>experienced, hence the mirror appeared to pop up and back when the
>shutter was pressed. Hence I thought that the shutter itself might be
>faulty, not firing when requested. I checked out the camera just now and
>it appears to be working perfectly....

I'd definitely check the shutter. Perhaps the shutter curtains are
moving together (rather than sequentially) so there's no gap between
them. I've seen this with other horizontal cloth focal-plane shutters.

-- 
Mark Roberts
Photography and writing
www.robertstech.com

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