Visible crew/equipment: When Michael asks Selene who started the war she answers "They did. Or at least that's what we are led to believe". If you look really close on the side of the window you can see the shadow of the boom mike move. (00:57:15)
Visible crew/equipment: During the final battle, a vampire shoots into a totally dark room and kills a werewolf. He then lifts his gun and people are seen reflected in the sights. (01:37:05)
Chosen answer: In most of the shots, Lucien takes his coat off when he changes to wolf form, and the blade would be attatched to a mechanism in him coat. Also, the film gives us an example of the blade hurting a vampire: bloodloss. And that kind of weapon could do some serious damage, and as it probably wouldn't kill the vampires, it would almost definitely slow them down.