Zenmuse H20T

General FAQ

Sensor + Functions

What is the minimum focusing distance of the RGB cameras? 

The higher the zoom factor, the longer the focusing distance.

1×-2.8×, the minimum focusing distance is 1 m.
2.9×-3.9×, the minimum focusing distance is 2 m.
4×-4.6×, the minimum focusing distance is 3 m.
4.7×-14.2×, the minimum focusing distance is 5 m.
14.3×-200×, the minimum focusing distance is 8 m.

If the object is within the minimum focusing distance, the camera will not be able to focus. For example, if the aircraft/payload is 5 m away from a pylon, the camera will not be able to focus at a zoom level greater than 14.2×.

What factors affect the accuracy of the rangefinder? 

Laser rangefinders measure distance using the time of flight of light. Their accuracy could be affected in environments where this ToF is affected: The range will be reduced in smoke, rain, snow, dust, and other environments, and data readings may be jumbled.

When measuring an object with glass or transparent components:
If the glass is within moderate distance, the distance to the glass will be measured (not the object behind the glass)

The glass may reflect the laser beam to other locations, resulting in the distance to other locations.
If the surface of the glass is very smooth or too close, the light will pass through the glass to detect the objects behind, but the range will be significantly reduced.

What is the accuracy of temperature measurements of the H20T? 

The accuracy is ±2 °C or ±2%, whichever is greater. (Measured at 25 °C in a windless laboratory, 5 m away from the black body).

Note: black bodies have different emissivity levels, the measurement above is is based on the particular black body measured and for reference only.

What factors affect the temperature measurement of the Zenmuse H20T?

The reflectivity of objects: shiny metals have higher reflectivity will result in lower accuracy and lower temperature readings.

The temperature of background radiation: a clear, sunny day will have less of an effect on accuracy than a cloudy day.

Air temperature and humidity: the higher the temperature and humidity, the more likely the readings will be affected, and the lower the accuracy.

Distance between the camera and the object: the farther away the object is from the camera, the lower the accuracy.

Does the thermal camera in the H20T support digial zoom? 

Yes. It supports 2×, 4×, and 8× digital zoom.

How many different ways can I measure temperature using the Zenmuse H20T?

There are two ways: Spot Meter for measuring a single position, and Area Measurement for getting different readings in an area.

Intelligent Functions

What is Night Scene Mode?

In Night Scene Mode, the camera will switch the IR filter and adjust the ISP parameters to optimize for lowlight environments.

What is High-Res Grid Photo Mode? 

In DJI Pilot, by dragging to select an area in wide camera view, an image will be taken using the wide-angle camera while the gimbal rotates to automatically capture a series of photos at 20 MP of the selected area using the zoom camera at the current zoom level. All of the images captured will be stored in the same sub-folder on the SD card, generating an HTML file that can be opened in a web browser to view the overview image and the detailed close-up images.

What is the maximum Micro SD Capacity supported? 

128 GB. We recommend using a UHS-I Speed Grade 3 Micro SD card.

Are timed photos supported?

Yes, they are now.