At 14:01 6.2.2001 +0300, you wrote:
>My guess is that under similar use, the metal lens mounts
>will last
>substantially longer than plastic ones.
>---
>Sorry, what do you mean with longer? 300 years longer than
>250?
>Den
>
Of course, modern materials can be great. But as you said, the real good
modern materials are VERY expensive. When I was buying a bike, I had a
choice of a normal, Cro-Moly (which is of course also a slightly modern
material) construction, or a composite construction. The later was several
times as expensive. And remember - the producers are cutting costs anywhere
even slightly possible - the way of modern economy. They won't choose the
best plastic, they will choose the least but still usable plastic. For 5-6
years at most, the lens will work (if not used much). But what then? We are
still using our 50 years or even more old lenses, metal. Who has got a
modern cellular phone that lasts more than 1 year of heavy use? People I
know who have to use them daily (and phones of the big brands, Nokia and
such), and have to replace it every year not only of snobbery, but also of
heavy wear.
I agree that a great lens can be made of plastic, propably as durable as
old metal lenses or even more. But nobody's doing it because modern society
just doesn't want thing to last long. That's consumer culture. American way
imposed on us all ;)
Frantisek
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