What was so distinctive about the red-figure vases of the Greek artist known as 'the Berlin Painter'?

 

Red-figure bell krater (c. 500–490 BC), Greek, Attic, attributed to the Berlin Painter. Musée du Louvre, Paris; © RMN-Grand Palais (musée du Louvre)/Stéphane Maréchalle

‘The Berlin Painter and his World: Athenian Vase-Painting in the Early Fifth Century BC’ is at Princeton University Art Museum from 4 March–11 June. Read about it here: Robin Osborne, "Striking attitudes on the sides of ancient Greek vases" Apollo, 25 February 2017.