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FP. Focal plane. A shutter that opens and closes near to the film or image sensor, usually as a fast-moving slit, as contrasted with a bladed/leaf shutter located near a nodal point of a lens. [12] FPA. Focal plane array. A matrix of sensors positioned in the focal plane of a lens or other focusing device. [12] FPS.
For cameras that can only focus on one object distance at a time, depth of field is the distance between the nearest and the farthest objects that are in acceptably sharp focus in the image. [1] ". Acceptably sharp focus" is defined using a property called the "circle of confusion". The depth of field can be determined by focal length, distance ...
The phrase depth of focus is sometimes erroneously used to refer to depth of field (DOF), which is the distance from the lens in acceptable focus, whereas the true meaning of depth of focus refers to the zone behind the lens wherein the film plane or sensor is placed to produce an in-focus image. Depth of field depends on the focus distance ...
List of companies in Houston. Floating cube at ExxonMobil headquarters. Sysco headquarters. Hewlett Packard Enterprise headquarters. Post Oak Tower in Uptown Houston, the headquarters for Landry's and Fertitta Entertainment. Crown Castle headquarters. KBR Tower, KBR 's headquarters. Academy Sports + Outdoors headquarters in Katy, Texas.
71,200. Multinational oil and gas company and largest of the Big Oil entities. The firm is headquartered in Spring, Texas north of Houston. Subsidiaries include Exxon, Mobil, and Esso. 9. AT&T. 160,546. 254,000. Multinational telecommunications holding company which includes many components of the former Bell System.
With $48.666 billion in business with the U.S. federal government, Lockheed Martin, based in Bethesda, Maryland, is the largest U.S. federal government contractor. The Top 100 Contractors Report (TCR 100) is a list developed annually by the General Services Administration as part of its tracking of U.S. federal government procurement.
Depth of field, in photography a measurement of depth of acceptable sharpness in the object space, or subject space. Depth of focus, in lens optics describes the tolerance of placement of the image plane to the lens. Digital obstacle file, in aviation contains data on man-made obstacles. 2,5-Dimethoxy-4-fluoroamphetamine (DOF), a psychedelic ...
Oceaneering International, Inc. Oceaneering International, Inc. is a subsea engineering and applied technology company based in Houston, Texas, U.S. that provides engineered services and hardware to customers who operate in marine, space, and other environments. Oceaneering's business offerings include remotely operated vehicle (ROV) services ...