People often ask myself, and other RiPA's, can 'Orbs' been seen with the naked eye?. The answer to this can be a yes and can be a no. Some people often swear that they see 'Orbs' floating around.
On an investigation, you may be lucky enough to catch an 'Orb' with the naked eye just as the flash goes off, but alas, this will be nothing more than dust, or if outside, probably just moisture. On a foggy/misty day, go outside with a high beam torch, shine it straight up and see how things look.
But...