PC Michael Atkin did not attend the hearing earlier this month.
It was also revealed that he had resigned from the force the previous day.
A statement on the South Yorkshire Police website reads: On February 2, 2021, PC 210 Atkin resigned.
"On February 3 2021, former PC 201 Atkin was the subject of an accelerated misconduct hearing which was chaired by Chief Constable Stephen Watson.
"It was alleged that the officer breached the standards of professional behaviour in relation to 'confidentiality' and discreditable conduct in that the officer shared a number of photographs whilst on duty, containing personal and sensitive information of members of the public, crime scenes and documentation.
"Many had a number of distasteful, inappropriate and unprofessional comments attached.
"At the conclusion of the hearing the Chief Constable found both allegations proved and determined that the officer would have been dismissed without notice if still serving."