Isn't it neet how information never changes? In 1900 leaving
a spring tensioned may have eventually weaken it, but modern
steels? There seems to be some sense to storing the lens
front down as the lub tends to work its way to the back when
in use. Do modern synthetic lubs harden up like older lubs
did? The change over was not so long ago and I guess it is a
good idea to assume any lens more than ten or so years old
had old fastioned lubs in it. I find there are more old
wives tales in photography than in most hobbies.
--Tom
Todd Stanley wrote:
>
> I've heard front down, diaphram at minimum F-stop or A setting. The reason
> for front down is so goo from the focus ring doesn't get down into aperture
> mechanism (or so I have heard), and for closing the aperture the reason is
> so there is no or little tension on the spring inside the lens that stops
> the aperture from closing all the way down when you select a wider F-stop
> than the minimum.
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