So im doing a project at school that involves using drones with thermal cameras for search and rescue purposes. Im trying to spec out a camera that will work, but im having trouble understanding the specs.One camera says that the lens "Prime lens, Focus at 5 mm, FOV 90° × 65° Focus at 8 mm, FOV 57.12° × 42.44"Im guessing that there are two different types of lenses you can buy for it, being 5 and 8 mm??Im really only trying to see what the radius of the ground they would be able to cover at a certain height, and just want to know the angle of the aperture of the cone of vision. Any help would be greatly appreciated. via /r/drones https://ift.tt/2C39tjr
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