The graph that best shows the change in the digital camera market when the productivity of workers who produce cameras increases is Graph (2).
When the productivity of workers increases, the cost of producing digital cameras decreases. This leads to an increase in the supply of digital cameras, which shifts the supply curve to the right. As a result, the equilibrium price decreases and the equilibrium quantity increases.
In Graph (2), the supply curve shifts from S1 to S2, which leads to a decrease in the equilibrium price from P1 to P2 and an increase in the equilibrium quantity from Q1 to Q2.
Graphs (1), (3), and (4) do not show the correct changes in the equilibrium price and quantity.
Graph (1) shows a decrease in the equilibrium price and an increase in the equilibrium quantity, but the supply curve does not shift. This is not consistent with the scenario described in the question.
Graph (3) shows an increase in the equilibrium price and a decrease in the equilibrium quantity. This is the opposite of what happens when the productivity of workers increases.
Graph (4) shows a decrease in the equilibrium price and an increase in the equilibrium quantity, but the supply curve shifts to the left instead of the right. This is also not consistent with the scenario described in the question.