Magnesium bodies

Started Mar 26, 2012 | Discussions thread
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Alphoid Veteran Member • Posts: 3,844
Right material for the right task

You can't compare the plastic in your lawn chair to high-tech plastics as used for camera bodies. You also can't compare across applications -- like gears vs. bodies vs. lenses. Gears should be made of steel. These need to be hard enough to not to wear down. Springs should be steel too. There are lens parts that need to be super-stiff in compact form factors. There, you do want super-rigid materials. There's a difference between hardness, fatigue life, stiffness, etc. You have different constraints for different engineering applications.

For the camera body, I'm inclined to agree that plastic is the right material for the job for most applications.

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