focal-length

The shallow depth of focus of a long focal-length macro lens isolates individual blooms and insects against a diffuse background of floral colours.

Make hay meadow photos while the sun shines | Phil Gates 2011

Within its compact, lightweight body, the Pentax X90 features a high-magnification optical 26-times zoom lens offering a focal-length coverage between 26mm wide angle to 676mm super telephoto in the 35mm format.

February 2010 - Fareastgizmos.com 2010

Although they won't all run as packages, introducing variation to every assignment makes for a more interesting newspaper because the best shot from each assignment will likely result in a different focal-length lens, perspective, depth of field or detail.

Archive 2008-06-01 2008

Although they won't all run as packages, introducing variation to every assignment makes for a more interesting newspaper because the best shot from each assignment will likely result in a different focal-length lens, perspective, depth of field or detail.

Categorize multiple photo groups 2008

Common Misconception: "The laws of optics dictate that these (short focal-length) lenses have a large depth of field."

doggdot.us 2008

Each one is equipped with a short focal-length lens with 1.6 times zoom and features low fan noise of 20dB in low lamp mode, providing flexible installation options in many home settings.

March 2007 - Fareastgizmos.com 2007

Architecture features traditional rough brick walls, the very narrow stone-paved lanes that are a characteristic of Lugang and images of Taiwanese roofs taken from an elevated height with a long focal-length lens, capturing a terraced landscape of the distinctive tiled Taiwanese roofs with curving gables.

Archive 2006-01-01 Michael Turton 2006

At all three mirrors a precise record was kept of the ever-changing focal-length and azimuth settings.

The Cardinal of the Kremlin Clancy, Tom, 1947- 1988

By 1950 they'd developed a hundred-inch focal-length lens.

Ice Station Zebra MacLean, Alistair, 1922-1987 1963

Planned by GILL, the photographs were taken at the Cape Observatory with a DALLMEYER lens with 15 cm. aperture and a focal-length of 135 cm. Plates of 30 × 30 cm.

Lectures on Stellar Statistics Carl Vilhelm Ludvig Charlier 1898