LIGHTING. In scenes that show stage lights and chandeliers, the focus on them is softened, but it can still be seen that the "lamps" and "candles" are in fact far too steady, and too smokeless, to be or to contain live flame. Gaslight was not brought into theatres until just after 1800 (in England), and limelight -- with real quicklime -- around 1820. Also, some outdoor lighting -- outside palaces, etc. -- is obviously too bright, blue- or green-shaded, smokeless, and sharp-edged to come from a bonfire.