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LiDAR vs Photogrammetry: Choosing a Drone Mapping Payload in Australia

When a LiDAR drone is the right tool, when a photogrammetry camera does the job, and the payloads we supply.

DJI Zenmuse L2 LiDAR and Zenmuse P1 mapping payloads

· 7 min read · Enterprise Systems Specialist

Drone mapping turns flights into measurable data. Two methods dominate: photogrammetry, which builds 3D models from overlapping photos, and LiDAR, which fires laser pulses and measures how long they take to return. Each has strengths, and the right choice depends on the terrain, the accuracy you need and the time you have. This guide compares them and the payloads we supply, whether you are comparing LiDAR drones, a drone LiDAR scanner for your own aircraft or a service for drone mapping near me.

How photogrammetry works

A photogrammetry drone takes hundreds or thousands of overlapping photos. Software such as DJI Terra matches features across the images and builds an orthomosaic, a point cloud and a 3D model. It captures colour and texture, works well on open ground and produces excellent visual deliverables. It struggles under dense vegetation, because the camera cannot see the ground through the canopy. Shadows and moving objects such as vehicles or water can also introduce errors, so plan flights for even light.

How LiDAR works

A LiDAR payload sends out laser pulses and records the returns. Because some pulses pass through gaps in vegetation, a LiDAR drone can capture the ground beneath trees, which makes it the better choice for forested or heavily vegetated sites. It also works in low light and produces dense point clouds quickly. Because LiDAR is an active sensor, it does not depend on sunlight, so you can fly early in the morning or late in the afternoon when photogrammetry struggles with long shadows.

LiDAR vs photogrammetry compared

FactorLiDAR dronePhotogrammetry drone
Under vegetationCaptures ground through gaps in the canopyCannot see the ground under dense cover
Colour and textureNeeds an RGB camera to colourise pointsExcellent, from the photos themselves
Processing timeUsually fasterLonger, because of image matching
Low lightWorks wellNeeds good lighting
Typical useForestry, corridors, topographic survey, complex terrainOrthomosaics, volumes, construction progress, inspection models

DJI Zenmuse L2: LiDAR plus a camera

The DJI Zenmuse L2 combines a LiDAR module with a 4/3 CMOS 20 MP RGB camera. It records up to 240,000 points per second on a single return, supports up to five returns, detects objects up to 450 m away at 50% reflectivity and delivers about 4 cm vertical and 5 cm horizontal accuracy. It weighs about 905 g. See the Worry-Free Basic Combo and Worry-Free Plus Combo for the full kit, or browse LiDAR sensors.

DJI Zenmuse P1: a full-frame mapping camera

The DJI Zenmuse P1 is a 45 MP full-frame camera with 24 mm, 35 mm and 50 mm f/2.8 lens options, a global mechanical shutter up to 1/2000 s and a minimum photo interval of 0.7 seconds. It is made for the Matrice 350 RTK and Matrice 300 RTK. Choose it when you need photogrammetry-grade imagery over open ground.

Other mapping options

Smaller teams can start with the DJI Phantom 4 Pro RTK SE for RTK photogrammetry, or the DJI Matrice 4 Enterprise for a portable multi-camera platform. Add an RTK base station for centimetre-level positioning, and consider Livox LiDAR modules for custom integrations.

Planning a mapping flight

Good data starts with good planning. Set enough image overlap for photogrammetry, fly a consistent height above the ground, and use ground control points or RTK corrections so you can check accuracy against known positions. For LiDAR, plan the line spacing and flight speed to reach the point density you need, and calibrate the sensor as the manufacturer directs before each job.

Software and deliverables

The flight is only half the work. Processing software turns raw data into the outputs clients ask for: point clouds, digital elevation models, orthomosaics, contour maps and volume reports. DJI Terra processes data from DJI payloads, and many surveyors also export to third-party software. Allow for a computer with enough memory and a good graphics card, because large mapping datasets are heavy.

Which should you choose?

  • Choose LiDAR if you survey forested, steep or complex ground, or you need ground points under vegetation.
  • Choose photogrammetry if you work on open sites and need coloured orthomosaics and models.
  • Choose both if you map for a living: many survey teams carry a LiDAR payload and a mapping camera.

Not sure which fits your work? Use the quote form and tell us your site type and deliverables. For more on our enterprise range, read the enterprise drones guide.

Frequently asked questions

Is LiDAR better than photogrammetry?

Neither is better in every case. LiDAR captures ground under vegetation and processes quickly, while photogrammetry gives coloured, textured models over open ground.

What is the DJI Zenmuse L2 used for?

It is a LiDAR payload with an RGB camera, used for topographic survey, forestry, corridor mapping and any site where you need ground points through vegetation.

Do I need an RTK base station for drone mapping?

For survey-grade accuracy, RTK positioning helps a lot. A base station or network RTK reduces the number of ground control points you need.

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