A patent showing a metal & plastic resin mount for DSLRs is available to view. The plastic part of the mount seems to be for a much smoother mounting and dismounting of lenses. There could also be some weight and cost savings for lower priced cameras like the EOS Rebel line.

Patent Publication No. 2014-240858 (Google Translated)

  • Published 2014.12.25
  • Filing date 2013.6.11

Canon patent

  • Of bayonet mechanism mount
  • Mounting an inner peripheral portion of the body has a concave rail surfaces of metal
  • Mount the outer periphery of having a rail surface of the convex shape in the resin
  • That resin rail than the metal rail, I have a narrow width and high height

Source: [EG]


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