The drone can photograph a few meters inside the glass.

When shooting inside glass, the shooting distance of UAV is affected by many factors, including thickness, material, transparency, reflectivity, ambient light and so on. The following are some possible estimates and references:

1. Thickness and material of glass: The thickness and material of glass will affect the transmission and refraction of light, thus affecting the shooting distance. Generally speaking, the thicker the glass is, the less light passes through it, and the closer the camera needs. However, transparent glass, such as ordinary window glass, can easily capture the internal scene.

2. Reflectivity of glass: When the reflectivity of glass is high, it will reflect the surrounding scenes, which may increase the difficulty of shooting the scenes inside the glass. In this case, you can try to adjust the shooting angle near the glass surface or use tools such as filters to reduce reflection.

3. Lighting conditions: The lighting conditions of the surrounding environment will also affect the shooting distance. In the case of sufficient light, drones can shoot long-distance internal scenes. However, when the light is dark or there is strong reflection inside the glass, a closer distance is needed to shoot the internal scene.

To sum up, the specific distance that the drone can photograph a few meters inside the glass is uncertain and needs to be determined according to the specific situation. Generally speaking, for ordinary window glass, drones can shoot internal scenes about 2-3 meters away from the glass surface. However, if the glass is thicker or the reflectivity is higher, a closer distance is needed to shoot the internal scene. It should be noted that when shooting, it is necessary to avoid collision and damage to drones, while respecting the privacy of others and avoiding infringing on the rights and interests of others.