To spot those orbs on camera but not in person, you'll need to work with the video cameras and night vision setup in the truck. Make sure your cameras have night vision enabled since that's the only way to actually see them floating around. Best approach is setting up a few cameras in the spots you think the ghost might be, keeping the lights off to avoid washing out the feed.

The truck's monitors give you a big advantage here since you can watch multiple angles at once and catch those random floating patterns. Something interesting to remember is that orbs tend to drift around specific areas of the ghost's room, so if you're not seeing anything try adjusting your camera angles or checking different spots. The weather can mess with visibility too especially when it's snowy or rainy, so keep an eye out for those false positives.

If you're on higher difficulty and not seeing orbs where they were before, the ghost might've switched rooms which means repositioning cameras. Good idea to watch each feed for at least 30 seconds, since orbs can be pretty sporadic with their movements and sometimes take a while to show up in frame.