dji ZENMUSE P1 - Nap-Of-The-Object Photogrammetry Description

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17
ZENMUSE P1 User Manual
Nap-Of-The-Object Photogrammetry Description
For nap-of-the-object photogrammetry, it is recommended to set the camera to M mode and to
calibrate the innity focus point. Adjust the shutter speed and aperture, enable auto ISO, and set the
metering mode to global metering.
Aperture Setting
To obtain high-resolution photos when lighting conditions are good, users can select a smaller aperture
that shortens the hyperfocal distance and reduces the GSD.
Choose the largest possible aperture that meets the required resolution to obtain the largest possible
luminous ux. If lighting conditions are good, use a faster shutter speed to avoid motion blur.
It is recommended to use an aperture of f/5.6-f/11.
Aperture Parameters
Aperture
Range
24mm Lens 35mm Lens 50mm Lens
Minimum
shooting distance
between P1 and
the object (m)
GSD
(mm/pixel)
Minimum
shooting distance
between P1 and
the object (m)
GSD
(mm/pixel)
Minimum
shooting distance
between P1 and
the object (m)
GSD
(mm/pixel)
2.8 23.4 4.2 49.7 6 101 8.9
5.6 11.7 2.1 25 3 50 4.4
8 8.2 1.5 17.5 2 35 3.1
11 5.9 1.06 12.6 1.6 25.8 2.3
16 4.1 0.75 8.7 1 17.8 1.5