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Canon Patent - New Hybrid AF Sensor

We already know that Canon has the most advance range of AF sensor in industry (Hybrid & Dual-pixel), the entry level DSLRs uses Hybrid AF sensor that combines the Phase AF and Contrast AF technology on the other hand the pro APS-C DLSRs uses Dual-Pixel CMOS AF Tech that made up of two intelligent sub-pixels.

In general the Hybrid AF sensors uses two different technology, contrast detect and Phase Detect. The Phase Detect AF system is used for quickly locking AF on subject on the other hand the contrast detect AF system fine-tunes the AF point and enhances its accuracy.

However Canon finally wants to enhance the AF speed and accuracy to next level, they will now use light-field technology to improve the performance of the AF sensor inside the camera.

There is a big possibility that we may see a new generations of sensors based on Light – Field technology in near future with blazing fast AF speed.

Patent Image and other details


Description, self-interpretation of the patent literature

  • Patent Publication No. 2015-161785
    • Published 2015.9.7
    • Filing date 2014.2.27
  • Canon patents
    • The image plane phase difference AF, the light field I comprises a
    • First, it is focusing on the image plane phase difference AF
    • Then, detect the focus from refocus image
    • To determine the driving range from the re-focus information in the case of out-of-focus

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source - egami japan

1 comment to Canon Patent – New Hybrid AF Sensor

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