70D and 7Dmk2 is coming what to expect?

Started Feb 28, 2013 | Discussions thread
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bobn2
bobn2 Forum Pro • Posts: 41,819
Re: One comment about plastics
4

elfroggio wrote:

Somehow, people are implying that plastics are bad and metals are good. Not always, plastics can be manufactured to higher precision than metals and plastics withstand much wider temperature ranges without deformation than many metals.

In the 60s, that is the 1960s, and the 70s plastics were always low quality. Now, in many cases plastics are as strong and reliable as many metals. Plastics are fantastic in small size, cars or truck sizes that's another story.

That is exactly the case. Of course plastics have different properties and are used differently from metals and a good design engineer will design for the material that is to be used. There is no way just by knowing the material used that you can decide which is better. You'd have to be party to all the design calculations that went on.

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Bob

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