FWIW, the HSCA determined that the blow up of 133a came from the original negative. Since this negative was never handed over to the WC, this means the DPD "lost" this negative.
Or does it? The HSCA testimony off Robert Studebaker, which is now available on the Mary Ferrell website (thanks to some dweeb named...Pat Speer) indicates that Studebaker made numerous copies of the BY photos using a copy camera, and that the blow-up of 133a was in fact a photo of a photo. This, moreover, was also the position of DPD crime lab employee Rusty Livingstone in First Day Evidence.
If this is true, for that matter--that the blow up to 133A was in fact a photo of a photo--it means the photoanalysts for the HSCA couldn't tell a photo of a photo from a first generation print, which is to say they could not tell s from Shinola, and that their authentication of the BY photos is meaningless.
This, moreover, was also the position of DPD crime lab employee Rusty Livingstone in First Day Evidence.I've always felt that Rusty Livingston gave his nephew, Gary Savage, information about the involvement of the DPD in murder of JFK in hopes that Savage would pick up on what his ol unca Rusty was trying to reveal, without spelling it out in bold letters.
I met Rusty Livingston, and Gary Savage in the Adolphus Hotel in Dallas in 93, where they were hawking 1st Day Evidence...
I had a heated exchange with Savage, because I felt that he was an LNer with tunnel vision. He had an excellent source of inside information that Rusty had presented to him, but Savage refused to open his eyes and SEE what Rusty was attempting to do.
As you've pointed out, Rusty told Gary Savage that the DPD had the photo equipment and photographic expertise to create fake BY photos that would be nearly impossible to detect the fakery. I'll have to review 1st Day Evidence , but I believe Rusty was primarily focused on 133c.