Abstract: The method of combine single criteria balance with multiple criteria optimization is adopted. It makes force balanced partly, using the counterweights on crank, and makes the multiple criteria optimized by use of the I linkages on connecting rod, the multiple criteria include shaking moment fluctuations, the input torque fluctuations and the ground bearing forces. Results are, these multiple criteria were improved, and already attained the goal of shoot frequency.

Key words: High speed cinecamera, Optimal design, Pulldown film mechanism, Synthetic inertia balance