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Photo Forum / Film Photography / Medium format / July 2003

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Bessa I and light leaking.

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Max - 28 Jul 2003 14:32 GMT
I have a very nice Bessa I with Color Skopar lens and I'm very happy
with the lens performance. Mine also has a very rigid standard. But I
have problems with stray light that seems to get to the film creeping
around the pressure plate.  This happens mostly in open sun
situations, and appears to be a glitch inherent to the design of the
camera. The best I could do, that almost eliminated the problem is
place an "L" shaped thick felt piece surrounding the lower and outer
sides of the 6x9 red window, under the pressure plate. Still there's
in some pictures an almost unnoticeable spot near this window that
still receives some leaking (I guess only in direct sunlight again).
I just wanted to know if someone has designed a standard way to keep
the light out, probably adjusting the shape of pieces of felt to do
the job. I have a Zeiss Nettar camera that uses a piece of felt with a
round hole to do this, but the window closing mechanism on the bessa
makes that impossible. I know sometimes the camera is on a tripod and
I'm not careful enough to shield it against light when winding the
film. Any ideas?
One nice thing to try with this folder: shoot Agfa Scala (ISO 200) at
ISO 800, the contrast is incredible, but retaining a smooth variation
in tonality, and depth of field is much easier to work with. Grain, on
the other hand, should increase, but not a concern in this neg size.
The 6x9 B&W slides are something worth seeing.
Another question that also keeps going around: when you close the
Skopar's aperture setting all the way, it appears to get to something
like f/45, can someone confirm this? I remember getting well exposed
slides using it as f/45, but it would be nice to know for sure.
Thanks in advance
Roland - 28 Jul 2003 16:44 GMT
Use ISO 100 only for outdoors work. If you have no cover for the red window
then make one. Use a piece of insulating tape and keep it over that window
unless you are winding on. And when you do wind on make sure you do so in
subdued light. SHADOW or darker. Then cover it again.

These cameras were designed at a time when film was black and white and not
red-sensitive.It has all changed now so follow the above precautions.

> I have a very nice Bessa I with Color Skopar lens and I'm very happy
> with the lens performance. Mine also has a very rigid standard. But I
[quoted text clipped - 23 lines]
> slides using it as f/45, but it would be nice to know for sure.
> Thanks in advance
JCPERE - 29 Jul 2003 12:40 GMT
>"Roland" roland@rashleigh-berry.fsnet.co.uk

>These cameras were designed at a time when film was black and white and not
>red-sensitive.It has all changed now so follow the above precautions.

It would seem like by the 50's, when the Color Skopar was in use, that B&W film
was panchromatic.  I use my late 40's Agfa Isolette with Ilford D3200 and have
no problems.  And this camera has no cover on the red window.  Maybe he needs
to replace the window material.
Chuck
 
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