On 1/7/2008 5:58 PM Richard Knoppow spake thus:
> "David Nebenzahl" <nobody@[EMAIL PROTECTED]
> wrote in message
> news:4781e61b$0$16276$822641b3@[EMAIL PROTECTED]
>
>> 2. Speaking of pneumatic cylinders, the shutter has two,
>> one on each side. But the one on the left does absolutely
>> nothing! There's even a hole at the bottom of the
>> cylinder. Were there other models that actually used both
>> cylinders? If so, perhaps they wanted to keep the
>> appearance the same, so they kept the left cylinder even
>> though it is non-functional. Can't think of any other
>> reason to have it there.
>>
> The second cylinder is for an air release. The end of
> the hose pushes over the nipple in the end and its operated
> by an air bulb at the other. Many old shutters were made
> this way even when they had fittings for a wire release. Air
> releases are more flexible and can be longer.
Of course; d'oh!
>> 3. The operation of the shutter--that is, how the operator
>> uses it--leaves much to be desired. There's no provision
>> for a cable release. The same lever is used for cocking
>> (push up) and shutter releasing (push down). So the only
>> way one would get good results with long exposures would
>> be if one had a very steady hand (or a massive tripod, or
>> both).
>>
>> The thing that doesn't seem right is that the shutter
>> doesn't work correctly unless one keeps the lever held
>> down until the shutter closes. If you release the shutter
>> but then let go of the lever before the exposure ends, the
>> shutter will stay open until you press the lever again. Is
>> this the way these were supposed to work? (I guess I've
>> been spoiled by modern shutters.)
>
> I think there is something out of order, perhaps a lever
> is in the wrong place. The shutter should trip with a push
> and not close until the air brake finishes its travel. I am
> sure I had some sort of information about this shutter but
> will have to search for it. The shutter should certainly
> latch on the T setting.
It works fine on both T and B. Oh, and I forgot to say that it (the
shutter) was made by Bausch & Lomb.
I looked on eBay after posting this to do some research and found a
*lot* of these shutters (or cameras, like Pocos and Premos) up for
auction there. (Just search for "Rochester" to find them.) They sure
made a lot of different models of this shutter, all with minor
variations. Must have made tens of thousands of them.
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