However it works, I'm glad it was discused. I have
been inspired to try my old Soligor 450mm f8 again,
this has been a real gem culled from a very busy
discussion group. John Robison
--- Walt Wayman <hiwayman@xxxxxxxxx> wrote:
> A final word on the sack of shot thing. A couple of
> writers seem
> to have misunderstood its purpose, apparently
> believing it's just
> to add weight to the photographic ensemble. That is
> not the
> purpose. Weight can easily be added to the tripod
> any number of
> simple ways, such as hanging the camera bag on it,
> or you might
> carry one of those old mesh potato sacks and enlist
> the aid of a
> local rock or two.
>
> Because of the physical characteristics of the
> loose, heavy lead
> shot in the bag, hopefully making maximum contact
> with the
> equipment, it absorbs and dampens the vibrations
> within the
> camera/lens combination caused by the mirror
> flopping up and the
> diaphragm slamming semi-shut. Though the added
> weight may be of
> some benefit, it is not the object of the exercise.
> A brick or a
> book or a small, furry animal atop the gear would
> not serve the
> same purpose, and a Mack truck hanging from a tripod
> made of
> reinforced concrete will have no effect on
> vibrations inside the
> camera.
>
> Any hi-fi nuts out there may be familiar with this
> notion. Being
> also a vinylholic, I have to admit that's where I
> got the idea.
> Some of the high-end equipment stands for turntables
> have hollow
> legs which you fill with lead shot to dampen
> vibration.
>
> Walt Wayman
>
>
>
>
>
>
>
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