Is this camera radiometric?

Yes. It records temperature values for each pixel, so you can pull readings from images and video in DJI's software rather than judging heat by color alone.

Which drones does it fit?

It uses DJI's Zenmuse XT gimbal mount for the Matrice 100, 200 and 600 series and the Inspire 1. It does not fit Mavic or Phantom bodies.

What does the 9mm lens mean for my work?

It gives a wide field of view, good for covering roofs and solar arrays quickly. Small objects will look blocky at 336x256, so close detail needs a longer lens.

Does it record video as well as stills?

Yes. It captures thermal stills and video at 30Hz, and on dual-camera setups it can run alongside a visible-light camera.

Is it still a good choice over newer thermal payloads?

It remains a solid, well-integrated option if you already fly DJI enterprise aircraft. Newer cameras offer higher resolution and lighter weight, so compare those if detail matters more than cost.