It may have been a split decision, and Harvey Weinstein may have been acquitted of the most serious charges in the case. But the stunned expression on his face after the jury’s verdict came in and he was placed in handcuffs on Monday made clear that it was a devastating blow.

On the other side, Cyrus R. Vance Jr., the Manhattan district attorney, could take pride in even a partial win against Mr. Weinstein after coming under heavy criticism for declining to prosecute the once-powerful producer at an earlier opportunity.