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Canon Files Patent For Automated Auto-Focus Microadjustement

Auto-Focus Microadjustement

Source: Egami (translated)

Canon filed a patent for automatic auto-focus microadjustement of lenses. Pretty cool feature that I would like to see on my DSLRs.

Patent description:

  • Patent Publication No. 2013-254194
    • Publication date 2013.12.19
    • Filing date 2012.5.11
  • Issues surrounding the AF adjustment
    • The looseness of the phase difference AF sensor, because the AF accuracy is worse, need AF adjustment
    • It is not done correctly the AF adjustment in your environment
    • Necessary facilities such as service center
  • Canon patents
    • Automation of the AF adjustment
    • Procedure
      • Let me be the difference adjusted value of the phase difference AF and contrast AF
      • To determine the reliability
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