Visible crew/equipment: Near the start when the vampire that's been burnt gets taken into hospital, watch the big glass cabinet as he gets wheeled in by 2 doctors - the crew and the boom mic are reflected in the glass. (00:10:59)
Visible crew/equipment: In the scene near the end of the film when Blade regenerates then kicks vampire butt you can see a man who looks somewhat out of place bouncing up and down in the background. (01:44:55)
Visible crew/equipment: When Blade takes Karen to the hideout, Whistler injects her and tells Blade, "I give her 50/50 if she makes it through the night." In the shot where he says this, look directly behind Blade (near the ground, next to the drawers), and you can see a piece of equipment (it looks like extra lighting, but it's hard to tell) being moved out of shot by an out-of-sight crew member. (00:18:29)
Visible crew/equipment: In the shot where Blade and Karen are running across the rooftop from the police firing at them from the hospital/morgue window, you can see the arms of a man holding a paintball gun on the right side of the screen. Paintball guns were used to fire projectiles that mimic the spark and smoke effects of bullet strikes. (00:15:35)
Chosen answer: It would seem Deacon has gathered a lot of strength around himself, in followers of "young" vampires like himself. After he kills Gitano he just abducts all the vampire elders, showing his followers are a lot stronger than the elders are. So they probably couldn't have killed him even if they wanted to, not unless they want to unleash a war. They thought his pursuit of the vampire god was totally pointless, so they let him waste his time and were probably trying to find a way to get rid of him.
lionhead