Day or thermal camera on an FPV drone: how to choose for the task
05.11.2026
By Ptashka Drones Editorial Team
A day camera gives a detailed image when there is enough light. A thermal camera shows heat contrast and works in darkness without visible illumination. Both options are available in different configurations of Ptashka fibre-optic FPV drones. Below we compare how these cameras work and which parameters to confirm before ordering.
Which cameras Ptashka drones use
| Model | Day camera | Thermal camera | Fibre length |
|---|---|---|---|
| Ptashka-10-O | Analog Caddx Ratel 2, 1200 TVL, or digital Full HD, 60 fps | Thermal 640 × 512 | 15 or 20 km, depending on version |
| Ptashka 13-O/15-O | Analog Caddx Ratel 2, 1200 TVL | Thermal 640 × 512 | 10–30 km, depending on version |
| Ptashka-17-O | Analog Caddx Ratel 2 or digital Ptashka Full HD 1920 × 1080, 60 fps | Thermal 640 × 512 | 50 km |
In these configurations the video signal travels over a fibre-optic cable. The spool length sets the limit of the laid cable, while the actual flight range also depends on the route, power and payload. The sensor resolution and the video chain determine which details the operator sees on screen.
How a day camera works
A day camera captures visible light. With enough light it is easier to tell colour, texture and small details of the scene. The Caddx Ratel 2 supports low-light operation, so it can also be considered for dusk. In complete darkness an optical camera needs illumination.
The digital Full HD option transmits a 1920 × 1080 frame. Assess it together with ground equipment compatibility, latency and image quality on the operator's screen.
How a thermal camera works
A thermal imager registers infrared radiation and shows the difference between surfaces. The image depends on heat contrast, optics and viewing conditions. For the Ptashka models listed here the specifications give a 640 × 512 thermal sensor.
A thermal camera does not need visible light. At the same time dense fog, precipitation and humidity can shorten the viewing range. In smoke the result depends on its density and the conditions. When surface and background temperatures converge, the thermal image loses contrast. FLIR on fog and rain.
Day vs thermal camera
| Parameter | Day camera | Thermal camera |
|---|---|---|
| Lighting | Needs visible light or illumination | Works without visible illumination |
| Scene detail | Shows colour, texture and outlines | Shows heat contrast |
| Fog and precipitation | Visibility may drop | Viewing range depends on fog density and precipitation |
| Dawn and dusk | Detail depends on light | Contrast may drop when surface temperatures converge |
| Cost | Confirmed for the specific configuration | |
How to choose a camera for the task
- Assess the lighting. For an image without visible illumination, consider the thermal option. With enough light, a day camera shows familiar visual detail.
- Decide which details you need. Colour and texture depend on optical image quality; telling surfaces apart by temperature depends on heat contrast.
- Check the configuration. Confirm the exact camera, video signal type, ground station compatibility and the cost of the full kit.
The role of the spool and the ground segment is explained in how a fibre-optic FPV drone works. The difference between fibre and radio links is covered in what is a fibre-optic drone.
Frequently asked questions
Does a thermal camera work in complete darkness?
Yes. It registers infrared radiation without visible illumination. Clarity depends on heat contrast and the camera's capabilities.
Does a day camera work at dusk?
The Caddx Ratel 2 is designed for low light. Without any visible light, optical image quality depends on illumination.
What is the thermal camera resolution on Ptashka drones?
The thermal versions of the 10-O, 13-O/15-O and 17-O list 640 × 512 pixels.
Why does a thermal image sometimes lose contrast at dawn?
Surfaces and background can reach similar temperatures, so the edges between them become less visible. How long this lasts depends on weather, materials and lighting.
Which cameras are available for the Ptashka-17-O?
The model page lists analog day, digital Full HD and thermal cameras. Before ordering, confirm the availability of the camera, spool and ground equipment combination you need.
To confirm the kit and camera compatibility, contact Ptashka Drones.
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