Lenses Used in Front of The Primary Lens
Examples of secondary lenses designed to be used in front of the primary lens are:
- Fisheye adaptors
- Corrected wide angle adaptors
- Telephoto adaptors such as teleside converters
- Close-up lenses
All of these typically mount on the filter ring of the primary lens.
Front-mounting secondary lenses are commonly used to provide wide-angle and telephoto lenses for cameras which lack the facility to change the primary lens, such as consumer and "prosumer" video cameras and camcorders, bridge cameras, point-and-shoot cameras and some older consumer medium format cameras.
Read more about this topic: Secondary Lens
Famous quotes containing the words lenses, front and/or primary:
“Life is a train of moods like a string of beads, and, as we pass through them, they prove to be many-colored lenses which paint the world their own hue, and each shows only what lies in its focus.”
—Ralph Waldo Emerson (1803–1882)
“Here, in front of the summer hotel
the beach waits like an altar.”
—Anne Sexton (1928–1974)
“A primary function of art and thought is to liberate the individual from the tyranny of his culture in the environmental sense and to permit him to stand beyond it in an autonomy of perception and judgment.”
—Lionel Trilling (1905–1975)