As a follow up to an answer given in Havdalah and fingers which says:
The Mishnah in Berachos 51b writes that one should not make the blessing of "Bore Moerei Ha'esh" should only be made if one benefits from the light of the candle.
My question is - Must one turn off dim all electrical lights in the room in order to receive the proper benefit from the candle light, only? In my shul, they do this. But I haven't seen this done too often in most shuls or in people's homes.