KeyCameraZoomFocalLength returns weird values

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Shay Lavi

• 2023年08月13日 07:09

Im using M30T
the value range of KeyCameraZoomFocalLength is from 48-4800 (I don't know the unit)
In the M30T specs it says - Focal length: 21-75 mm (equivalent: 113-405 mm)
which is no where near the values I get
What am I doing wrong?

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  DJI Developer Support

  • 2023年08月14日 12:07

  This is because the M30T also has digital zoom, but the official website only provides the hardware specifications of the camera. The value obtained from KeyCameraZoomFocalLength is the value provided to us by the aircraft.

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  Shay Lavi

  • 2023年08月14日 12:19

  It is still not the correct values
  When I am minimal zoom I get the value of 48. In the specs sheet of m30 the min focal length is 21.

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  DJI Developer Support

  • 2023年08月15日 06:20

  You need to check the range of equivalent focal length. The minimum value is 113 for the M30 series. The 2x to 5x zoom is digital zoom, where 2x refers to the wide-angle lens, so it is 48. The range from 5x to 16x is optical zoom, and beyond 16x is digital zoom. The zoom lens of M30 can zoom up to 200x, which is why the maximum value is 4800.

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