| Primary Camera Type | 1/2.8-inch to 1/1.7-inch CMOS camera | 1-inch CMOS camera, often paired with a secondary wide-angle camera | Large CMOS sensor or dedicated photogrammetry camera | Choose the sensor according to the required detail, flight altitude, and available light. |
| Still-Image Resolution | 12–20 MP | 20–48 MP | 24–61 MP | Higher pixel counts help with cropping and mapping, but lens quality and image overlap remain critical. |
| Video Resolution and Frame Rate | 4K at 30–60 fps | 4K at 30–120 fps, depending on the recording mode | 4K video is available on some payloads; still capture is usually the priority | Use higher frame rates for fast-moving subjects, vibration analysis, or smoother inspection footage. |
| Optical Zoom | Fixed lens or approximately 2× optical zoom | Approximately 3×–20× optical zoom | Fixed focal length or moderate optical zoom | Optical zoom preserves more detail than digital enlargement when inspecting distant assets. |
| Thermal Capability | Usually unavailable or optional low-resolution thermal module | Optional radiometric thermal camera, commonly 640 × 512 or 1280 × 1024 pixels | Usually not included unless thermal inspection is a project requirement | Radiometric thermal data is useful for temperature measurement, electrical inspection, and hotspot detection. |
| Gimbal Stabilization | 3-axis mechanical stabilization | 3-axis mechanical stabilization with horizon correction | 3-axis stabilization optimized for nadir or near-nadir imaging | Three-axis stabilization is preferred for stable video, accurate framing, and consistent mapping imagery. |
| Typical Angular Stability | Approximately ±0.02° to ±0.05° | Approximately ±0.01° to ±0.03° | Approximately ±0.01° to ±0.03° | Lower angular error generally improves image sharpness and reduces the need for repeated flights. |
| Control Methods | Remote-controller commands and mobile application | Remote controller, mobile application, SDK, and sometimes a secondary operator station | Mission-planning software, camera trigger interface, and flight-controller integration | For automated operations, verify SDK access, trigger support, telemetry, and compatibility with the flight-control system. |
| Control Latency | Typically below 150 ms on a stable digital link | Typically below 100–150 ms on a reliable digital link | Depends on the aircraft, camera interface, and mission-planning system | Lower latency improves framing accuracy and response during close inspection or fast flight. |
| Autofocus and Exposure Control | Single-shot autofocus and automatic exposure | Continuous autofocus, manual focus, shutter, ISO, and exposure compensation | Manual exposure and fixed-focus workflows are common for consistent image sets | Manual control is valuable when lighting changes or when repeatable survey exposures are required. |
| Image and Video Storage | Removable microSD storage, commonly up to 256 GB | Removable microSD or onboard storage, commonly 256 GB or more | High-capacity removable storage or direct data transfer to an onboard computer | Confirm storage speed, file-system compatibility, and maximum supported capacity before deployment. |
| Data Interfaces | USB, wireless image transmission, and basic telemetry | USB, Ethernet or serial interfaces, high-definition downlink, and telemetry | USB, Ethernet, serial trigger, GNSS/RTK event markers, and time synchronization | Survey and inspection workflows benefit from accurate timestamps, positioning data, and reliable trigger signals. |
| Typical Payload Mass | Approximately 200–500 g | Approximately 500 g–1.2 kg | Approximately 400 g–1.5 kg | Check the aircraft payload limit, center of gravity, vibration behavior, and available power margin. |
| Typical Power Consumption | Approximately 5–15 W | Approximately 10–30 W | Approximately 10–40 W, depending on sensor and onboard processing | Power draw affects flight endurance, battery planning, and thermal management. |
| Operating Temperature | Commonly about −10°C to 45°C | Commonly about −20°C to 50°C | Often about −10°C to 50°C, subject to the camera and aircraft limits | Use the narrowest temperature rating among the gimbal, camera, aircraft, and battery. |
| Weather Protection | Limited protection; avoid rain and heavy dust | Some professional systems provide sealed or splash-resistant construction | Varies widely; survey cameras may require controlled weather conditions | Do not infer waterproofing from a sealed-looking housing; verify the published IP rating. |
| Calibration and Maintenance | Basic IMU, gimbal, and compass calibration | Routine gimbal calibration, firmware management, lens checks, and inspection of vibration isolators | Regular boresight, lens, timing, and positioning checks | A clear calibration procedure and available spare parts are important for repeatable results. |
| Operational Reliability Indicators | Stable startup, consistent image transmission, and low vibration | Redundant fault reporting, stable data links, thermal management, and controlled startup behavior | Reliable triggering, accurate event marking, repeatable exposure, and uninterrupted data recording | Evaluate the complete aircraft-payload system rather than the gimbal alone. |
| Best-Fit Applications | Routine visual checks, roof surveys, construction progress, and general documentation | Infrastructure inspection, public safety, search and rescue, and detailed video production | Orthomosaics, 3D models, stockpile measurement, corridor mapping, and precision inspection | Select the payload according to the required ground sampling distance, working distance, and reporting standard. |