Stunning revelation in the courtroom during the Kobe Bryant photo trial case Tuesday ... a deputy testified that he sent another cop graphic pics from the crash site while the two were in the middle of a "Call Of Duty" gaming sesh.
Michael Russell -- an L.A. County Sheriff's Dept. deputy -- says the exchange of the photos happened shortly after the Lakers legend and his daughter, Gianna, perished in the tragic, Jan. 2020 helicopter crash.
Russell, who claimed he had initially received the photos from fellow deputy Joey Cruz hours after the wreck, said he joined a video game party with Santa Clarita deputy Ben Sanchez the following day.