He had to use filters to get the original color.

The effects of the particular filter used should be understood in order to make an appropriate choice.

She'd spent too many years using phones and filters; she couldn't keep anything from showing on her face.

Yes I know corporations use filters on their networks, but interesting fact.

Out of interest, what is the Guardian policy regarding using filters on the camera?

The filters currently being used by other telescopes or organizations.

Up to modern times, this image was one of the filters the world used for looking at Australians.

This is an example of a filter being used in a choke application.

The new law requires libraries and schools to use filters or lose federal financing.

If you have asthma, however, talk with your doctor before using electrostatic filters.