--- Antonio Mart�n Vicente <[EMAIL PROTECTED]> wrote:
> I made a detailed inventory of the some 300
> photographs taken in
<snip)>
> The band, which may be completely black,
> more or less
> "transparent" or a juxtaposition of both of them
> either with clear edge or
> with a smooth transition in between or with the
> "normal" portion of the
> photograph, always appear along the longer edges, i.
> e. at the top OR at
> the bottom of the picture. Never along the shorter
> edges. This is
> consistent with the vertical displacement of the
> horizontal stripes of the
> shutter, but I cannot understand why sometimes the
> band is on top and
> others it is at the bottom. I have also not found a
> relation with the use
> of the flash; the problem appears equally in
> photographs taken with a
> flash and in those taken without flash and under
> sunshine conditions. When
> there is a band, its width is of 47% of that of the
> photograph in average,
> ranging from 10% to 96%, with 44% being a frequently
> repeated value.
>
> Of course I guess many of the completely
> unexposed frames
> correspond to the failures to fire a flash (third
> reported problem).
>
> I shall use the 9 outstanding virgin frames
> in the camera to make
> same tests and have a look at the shutter back after
> roll removal. Raising
> the mirror to check the front will not be so easy...
> Anyway, I do not
> remember to have seen it dirty before or during the
> trip.
>
> Most probably, we shall have to have the
> camera professionally
> fixed. But first I should like to learn about
> (possible) causes of the
> problem(s).
>
Hi Antonio,
It certainly sounds like the rubber bump stop has
deteriorated. The symptoms you've described here
match the expected behaviour. The dark strip can be
either at top or bottom, depending on which shutter
leaf sticks at the time. The entirely black frames
are either from your flash not firing or the shutter
sticking closed completely (i.e. not opening). And
yes it does get worse once it starts happening.
Eventually the shutter will not operate at all.
I think the transparent band happens when one shutter
leaf sticks open after the exposure. It may close of
it's own accord some seconds or minutes later - or do
so only when the next exposure is made.
When you take the last film out and check the shutter
blades for confirmation, the gunk should be visible
from the back (film side). There's usually gunk on
both sides of the shutter, but checking the front by
lifting the mirror should also be possible.
I agree with Karen Nakamura's assessment that a
replacement film camera (a used, but near-new one)
will be a lot cheaper than getting the repairs done.
The part only costs a few dollars but the repair costs
US$100+ due to the extensive disassembly required. If
your flash circuitry has stopped working as well, then
no question about it....
Cheers
Gary
=====
Gravity...It's Not Just a Good Idea. It's the Law.
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