I think plastic got a very bad, but deservedly so rap in its first generation
of being used in cameras. The polycarbonate materials used today are very
tough and resilient. I still think its a very bad idea to use it in a lens
mount, though, because of the nature of it to flex, and/or tear loose from
where it is finally mounted to metal. The polycarbonate itself is not the
problem, but the meeting place with metal is.
George S.
Jim.Timpe@xxxxxxxxx writes:
Brass is far more malleable that stainless, will usually deform/bend/dent
under stress. Some of the harder alloys of stainless will fracture/crack
under the stress of an impact (being dropped). Neither is a good outcome,
but sometimes the brass part can be 're-shaped' back into a useable form,
whereas the stainless part is destroyed. Plastic tends to have the
unmalleable characteristic of the stainless, and likewise exhibits the same
tendency to fracture/crack... albeit at a far lower force. Remember our
wonderful thread awhile back about beating anybody's 'wonderbrick dejour' to
pieces with an OM-4T body.... Ah, what a lovely mental image that
conjures......
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