wista problem

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sandy - 23 Mar 2004 03:12 GMT

I have a Wista Field DX camera. The focussing is very rough.

I would appreciate suggestions on how to solve this problem.

Thanks

Sandy

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Bruce - 23 Mar 2004 03:52 GMT

>I would appreciate suggestions on how to solve this problem.
>
>Thanks
>
>Sandy

You might try:

http://www.skgrimes.com/

They seem to all sorts of things with shutters.
_________________
Ready, Fire, AIM.
Bruce
Brooklyn, N.Y.

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AArDvarK - 23 Mar 2004 07:36 GMT

I believe focusing would not have anything to do with
the shutter. What you should do is what I would do,
examine it closely ... there are focusing knobs and gear
rails, and the gears that ride that gear rail, on both sides.
Try watching very closely while turning the knob and
see if there are obstructions on the rails or the gear
that is on the inside that rides on the gear rail. If not,
then there must be sticky dirt, or dirt-thickened lubric-
ations on the inside of the rotating focus assembly
(knob/rod/gear). In such a case you could disassemble
it yourself and thoroughly clean all the parts using a
toothbrush and wd40, and buy some lithium grease to
re-lube lightly when the parts have been dried and
reassemble. This will be a lot cheaper than paying big
money to have it done for you. It should be all very
simple mechanics using basic tools. I could be wrong
about the lithium grease so if you do not see any
original stuff in there ... don't worry about it.

Alex

> I have a Wista Field DX camera. The focussing is very rough.
>
[quoted text clipped - 3 lines]
>
> Sandy

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Gary Beasley - 23 Mar 2004 23:17 GMT

>I believe focusing would not have anything to do with
>the shutter. What you should do is what I would do,
[quoted text clipped - 16 lines]
>
>Alex

Actually a good coat of wax would be better than grease, less chance
of getting places it don't belong and does just as good for a
lubricant. Works well on the wood surfaces that contact each other
too.

>> I have a Wista Field DX camera. The focussing is very rough.
>>
[quoted text clipped - 3 lines]
>>
>> Sandy

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Frank N. Stein - 23 Mar 2004 23:55 GMT

> Actually a good coat of wax would be better than grease, less chance
> of getting places it don't belong and does just as good for a
> lubricant. Works well on the wood surfaces that contact each other
> too.

Yah remember wax on, wack off!!! :-D

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AArDvarK - 24 Mar 2004 03:51 GMT

That problem is what "lithium" grease is all about.
it does not travel, wax will dry and chip.
Alex

> >I believe focusing would not have anything to do with
> >the shutter. What you should do is what I would do,
[quoted text clipped - 29 lines]
> >>
> >> Sandy

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Nicholas O. Lindan - 24 Mar 2004 04:38 GMT

> Actually a good coat of wax would be better than grease, less chance
> of getting places it don't belong ...

There is a product call "Vacuum grease" that is primarily used for
sealing the ground glass fittings of laboratory glass wear.

It does _not_ creep. It does not outgas and fog lenses with time.
It doesn't turn oily. It lasts forever. Really amazing stuff.

Do a google search for it. It comes in several price ranges,
the cheapest is the best for lubrication use. The others are
for super high vacuum work and/or high temperatures and the
grease performance is compromised in favor of low outgassing.

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Nicholas O. Lindan, Cleveland, Ohio nolindan@ix.netcom.com
Consulting Engineer: Electronics; Informatics; Photonics.
psst.. want to buy an f-stop timer? nolindan.com/da/fstop/

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Bob Salomon - 23 Mar 2004 11:41 GMT

> I have a Wista Field DX camera. The focussing is very rough.
>
[quoted text clipped - 3 lines]
>
> Sandy

Wista service is Marflex in the US. If you are there ask them. 973
808-9626.

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