Like below image, walk on glass intro scene of mass hero is very common in Indian film.
Like this kind of scenes, how to they use cameras?
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Whenever scene like this are needed to shoot, They usually uses a glass panel placed above the camera.
Actor walks on the glass panel. possible it could be a hardened glass. So actor walks on the glass, camera is located at below the glass, Not touching the glass. Then scene can be shot as normal one. No other special effects used.