An electromagnetic diaphragm is used for more precise and consistent exposure control, especially when shooting at high continuous shooting rates. Due to this unique design, this lens is only compatible with select Nikon F-mount cameras that support an electromagnetic diaphragm, including the D3100, D3200, D3300, D3400, D5000, D5100, D5200, D5300, D5500, D5600, D7000, D7100, D7200, D300, D300s, D600, D610, D700, D750, D800, D800E, D810, D810A, D3x, D4, D4S, Df, D500, and D5 DSLRs.