Tupac fans had to do a double take on the Vegas Strip as his tragic death was recreated ... and TMZ obtained the first photos from the set of a new biopic.
"All Eyez on Me" stars Demetrius Shipp, Jr. as 'Pac and Dominic L. Santana as Suge Knight. Check out this gallery of them filming the crucial scene ... with Demetrius in the passenger seat of the car moments before the fatal shots.
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Local reporters actually rushed to the scene during filming, mistaking the blanks for real gunshots.
It's been almost 20 years since Tupac's death and conspiracy theories that he's alive and in hiding are stronger than ever -- but Shipp ain't buying it.
The movie's slated for release in November.