What is material of 7D Shutter?
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It's a rotary magnet shutter (whatever that means) and is the same design as the shutter in 1 Series cameras - just scaled down to fit the 7D.
I would have thought it would be unlikely to be plastic - modern focal plane shutters tend to use quite exotic materials like titanium ad magnesium for lightness and durabilty given the stress on a FP shutter with continued use.
Pic of the shutter here.The shutter blades appear to be some sort of metal.
http://www.imaging-resource.com/PRODS/E7D/ZSHUTTER.JPG
I would have thought it would be unlikely to be plastic - modern focal plane shutters tend to use quite exotic materials like titanium ad magnesium for lightness and durabilty given the stress on a FP shutter with continued use.
Pic of the shutter here.The shutter blades appear to be some sort of metal.
http://www.imaging-resource.com/PRODS/E7D/ZSHUTTER.JPG