Zoom Lens

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Zoom Lens

A lens that allows a photographer to focus so that it appears that a picture is closer to or farther away from the viewer. The first zoom lens was developed by Frank Back and was introduced in 1959.
References in periodicals archive ?
Presbyopia likely results as the lens is less able to move in your eye to help focus.
For my second example (opposite, top left), I used a telephoto zoom lens set at about 200mm to flatten perspective in this photograph of a row of tombs in a Buddhist cemetery in Pakxe, Laos.
The START project's key activities are the following animal and human contact lens trials:
Use lens covers when you take your binoculars from a warm area to a cold area.
To shape a lens before hardening it, the Lucent researchers start with a glass slide coated with a conductive film.
By fitting the lens to the shape of an eye, so the lens and eye move together, an eye doctor ensures that the cornea will receive proper oxygen and lubrication from tears.
One respondent also reported that exposure to sand and wind required officers with contact lenses to take periodic breaks for lens cleaning.
In the first example (above), freelance photographer Jeff Amberg, shooting for SCANA Corporation's Insight magazine, uses a wide-angle lens to emphasize the massive scale of a huge pipe.
Dowski's idea was to do away with that little dance by inserting an additional lens between the camera's built-in set of lenses and the detector.
Food and Drug Administration has said the longest that any contact lens can be safely worn is six nights in a row.
Varioptic has now established itself as a leader in liquid lens manufacturing thanks to working very closely with our partner CSI.
STUDY OBJECTIVES BCC Research's purpose in conducting this study is to provide an overview of the current and future characteristics of the global contact lens market.