L A CONFIDENTIAL

[vetrinp]

HI,recently i saw the movie L A CONFIDENCIAL,in this particular film i want know a trick they have used.there is a introgation room in the film, one side of the room is coverd by glass.while the criminals r introgated by the police ,officers watch from other room through the glass,when camera is kept from outside,ie from officers side ,we clearly see the criminal inside the room and in reflection the officers.both the images r sharp, they have follwed in all scenes taking palce in that room.i have seen this kind of shots in some films,but in this particlar film it looks too diffrent.what glass they might have used,or any other tech they have used.kindly if anybody knows reply me