Visible crew/equipment: Right as Young Biff starts to chase after Marty through the tunnel, there is a shot of the wheel spinning around, and you can see the camera crew reflected in the hubcap. (01:29:45)
Visible crew/equipment: On some shots which look back at Ray when he's driving his pickup, it can be clearly seen at the bottom of the picture that the front wheels of the pickup are sitting on a trailer, which is itself being towed by the camera vehicle.
Visible crew/equipment: When Prancer is loose in the Riggs' house, he walks past and knocks down a television set. Right before he knocks it down, you can see the outline of the camera crew in the TV.
Visible crew/equipment: When the neighbours visit the Szalinskis to get their baseball and Nick opens the door, you can see the reflection of the cameras and lights in the glass.