Explanations for anomalous images caught on film (note this may not be true in all cases if you email the photo to me I can try and assess it for you and feature it on the site if you wish, confidientiality assured or credit given, its up to you)
Falling dust is often mistakened for "spirit balls"
Once again dust and the flash of the camera hitting a cable could be mistakened for a "vortex" thsi effect is also common with camera straps.
Moisture caught on film.
This is the reflection of the sun caught on camera I have seen plenty of photos with this type of defect.
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