| Photographic effects - IR Filters give the still and video photographer
expressive and unusual effects. |
| Police and detective forensic work - IR filters sometimes permit normally
invisible stains and modified items visible |
| Document analysis - IR filters are sometimes used find erased signatures,
damaged and altered documents. Some analysis is done using the
advanced IR photoluminescence effect where a document is illuminated with
Ultraviolet light and photographed with IR filters. Some inks will
fluoresce IR when illuminated with UV. |
| Factory automation - IR filters are sometimes used to detect filled
bottles, find defects, distinguish items and more. |
| Scientific experiments and laboratory use |
| Plant vegetation analysis and aerial photography - Vegetation looks
dramatically different when photographed in Infrared. Governments have
used IR to find illegal marijuana fields, map different plant growths and
many other uses. |