• Protecting your lens from dust and flying sand

• Protecting your lens from scratches (I’ve seen some bad scratches avoided because of this filter)

•  Protecting your filter mount from getting bent

•  Saving your lens by sacrificing itself (filters are housed in aluminum frames, these are soft and absorb impact well even though they’re not meant for this purpose)

•  Preventing Sea Spray (and salt) from getting into the lens (for this purpose alone, buy a UV filter)

Read more about why you UV filter at