Why magnesium alloy????

Started Apr 19, 2013 | Discussions thread
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Re: Why magnesium alloy????
In reply to RedFox88, Apr 20, 2013

I am going to repeat what I wrote in an earlier post:

Magnesium is superior in that it does not warp with mild heat and can retain critical dimensions that plastic can not.  It is also superior to plastic as far as machining precision goes.

Internal components and the image sensor need to be accurately aligned relative to each other.  Magnesium or other metals offer a much better scaffold for critically positioned parts than plastic by a wide margin.

So, while plastic may be more resilient than magnesium or other metals to handling and falls, it does not necessarily offer superior properties when precision placement and alignment of components are required.

To simply say one material is better than another in a general sense does not take into account the myriad of issues and requirements that go into a complex system like a camera with hundreds of interacting parts.

A post mortem of a pro camera will reveal a rainbow of different material, each part with a specific purpose and requirement.  No single material works for every need and each part's material is carefully chosen based on cost, performance, and function.

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