A San Francisco Superior Court judge on Wednesday brushed aside a call to disqualify the entire bench from same-sex marriage cases, saying the presiding judge’s involvement in a suit over domestic partner benefits didn’t create a conflict of interest.

“Public perception is the cornerstone of our system,” acknowledged Judge Richard Kramer. But he dismissed the claim that the stake held by Presiding Judge Donna Hitchens and her partner, Judge Nancy Davis, in a Sacramento suit would shake public confidence.