According to the conditions, of course, according to what to shoot. Such as cars, refrigerators, washing machines and other large goods, it is best to open a room at 150 square meters. It's best to cover all the windows and paint the interior walls black. The indoor height is more than 3 meters. There is no upper limit. The floor should be carpeted and raised, not tiled. Because at work, it is inevitable that photographic equipment will accidentally fall. If it is carpet and floor, the loss is not big.