It is necessary to put it at a height of a meter and a half and from the wall 3+ meters. Behind the sofa in general. Maybe a little further, maybe closer. Focus is adjusted with a wheel, but the closer, the smaller the "screen". My screen turned out to be somewhere 150cm + in height and 240cm or so in width. Focus allows you to move a little further, just a little bit. I made a bracket from a stick bought in Leroy for ~ 200r and a bar from below, so that it would not collapse on the sides. The quality cannot be transmitted from the phone (photo in the dark).
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