| Camera angles: |
Various positions of the camera with respect to the subject being photographed, each giving a different viewpoint and perspective. |
| Camera shake: |
Movement of the camera caused by an unsteady hold or support. A notable problem in a moving vehicle such as a helicopter or fixed wing aircraft. It is a major cause of un-sharp pictures, especially with long focus lenses. |
| Capacity: |
The largest number of passengers an aircraft can safely transport under a given set of circumstances and The total number of aircraft handled by an airport under a given set of circumstances. |
| CAVOK: |
Pronounced CAV-okay (ceiling and visibility OK), visibility at least ten kilometres, with no cloud below 5,000 feet, with no Cbs, precipitation, thunderstorms, shallow fog or low drifting snow. |
| CCD: |
Charge Coupled Device: one of the two main types of image sensors used in digital cameras. When a picture is taken, the CCD is struck by light coming through the camera’s lens. Each of the thousands or millions of tiny pixels that make up the CCD convert |
| CCD raw format: |
The uninterpolated data collected directly from the image sensor before processing. |
| CD-R: |
CD-Recordable: a compact disc that holds either 650 or 700 MB of digital information, including digital photos. Creating one is commonly referred to as burning a CD. A CD-R disc can only be written to once, and is an ideal storage medium for original digi |
| CD-RW: |
CD-Rewritable: similar in virtually all respects to a CD-R, except that a CD-RW disc can be written and erased many times. This makes them best suited to many backup tasks, but not for long term storage of original digital photos. |
| Ceiling: |
The height above ground or water of the base of the lowest layer of cloud below 20,000 feet which covers more than half of the sky. An aircraft's service ceiling is the density altitude (which see) at which its maximum rate of climb is no greater than 100 |
| Celsius (Celsius Temperature Scale): |
A temperature scale with zero degrees as the melting point of pure ice and 100 degrees as the boiling point of pure water at standard sea level atmospheric pressure. |
| Center of gravity: |
The force of gravity acts on every individual part of an object, like an airplane. On an airplane it is the point at which all weight is considered to be concentrated. It is the point of balance. This center point is located along the longitudinal centerl |
| Charlie: |
Stands for the letter C in the phonetic alphabet. |
| CIFF: |
Camera Image File Format. A method of digital camera image storage used by many camera makers. |
| Circuit: |
The pattern around which aircraft fly when arriving at an airfield. |
| Cirrocumulus: |
Cirrus clouds with vertical development. |
| Cirrostratus: |
Cirrus clouds with a flat sheetlike appearance |
| Cirrus: |
High clouds, usually above 16,000 feet, composed of ice crystals and appearing in the form of white, delicate filaments or white or mostly white patches or narrow bands. |
| Clear: |
Sky condition of less than 1/10 cloud coverage. |
| Clearance: |
The authorization from air traffic control to proceed as requested or instructed. Used for ground and air manoeuvring, thus "cleared for take-off", "cleared flight-planned route", "cleared to descend" etc. |
| Climb rate: |
The rate of ascent in feet per nautical mile. Usually the optimum speed and angle of attack at which a certain type of aircraft can safely ascend. |
| Close- up: |
General term for an image of a close subject, i.e. filling the frame. |
| Cloud: |
A visible cluster of tiny water and/or ice particles in the atmosphere. |
| Cloud Base: |
For a given cloud or cloud layer, it is the lowest level in the atmosphere where cloud particles are visible |
| Cloud cover: |
Describes to what degree the sky is covered by cloud. Generally indicated in intigers of one tenth. |
| Clouds: |
A visible collection of minute particle matter, such as water droplets and/or ice crystals, in the free air. A cloud forms in the atmosphere as a result of condensation of water vapor. Condensation nuclei, such as in smoke or dust particles, form a surfac |
| CMOS: |
Complementary Metal-Oxide Semiconductor: one of the two main types of image sensors used in digital cameras. Its basic function is the same as that of a CCD. CMOS sensors are currently found in only a handful of digital cameras. |
| CMYK: |
Cyan, Magenta, Yellow, Black. The four colors in the inksets of many photo-quality printers. Some printers use six ink colors to achieve smoother, more photographic prints. The two additional colors are often lighter shades of cyan and magenta. |
| Coastal forecast: |
A forecast of wind, wave and weather conditions between the coastline and 35 Kilometres offshore. |
| Cockpit: |
The forward section of the airplane where the pilots sit during a flight. |
| Codec: |
Compression and Decompression. Compresses information so that it can be sent across a network faster, and decompresses information received via the network. |
| Cold colors: |
Colors at the blue end of the spectrum that suggest a cool atmosphere. |
| Collective pitch control: |
The control stick in a helicopter that changes the angle of attack of the rotating blades. This has the effect of increasing and/or decreasing lift. |
| Color balance: |
The overall accuracy with which the colors in a photograph match or are capable of matching those in the original scene.
|
| Color depth: |
The number of bits assigned to each pixel in the image and the number of colors that can be created from those bits. True Color uses 24 bits per pixel to render 16 million colors. |
| Color saturation: |
Purity or strength of color, due to the absence of black, white or gray. |
| Colour negative.: |
Describes film stock designed to produce colour image with both tones and colours reversed for subsequent printing to a positive image.
|
| COM port: |
A serial communication port which support the RS-232 standard of communication. |
| CompactFlash™: |
A common type of digital camera memory card, about the size of a matchbook. There are two types of cards, Type I and Type II. They vary only in their thickness, with Type I being slightly thinner. A CompactFlash memory card can contain either flash memory |
| Compass: |
A device used to discover geographic direction, usually having a magnetic needle(s) that is horizontally mounted or suspended and free to pivot until aligned with the magnetic field of the earth.
|
| Compound lens: |
Lens system consisting of two or more elements. Compound lens designs allow the lens designer to reduce lens aberrations, making maximum apertures larger and improve resolution. |
| Compression: |
The process of reducing the size of a file. |
| Contract: |
Definite OK to take photos for a specific client with mutual understanding as to the provisions and terms involved. Confirmation in writing is required for a contract to be acted on |
| Contrail: |
A white trail of condensed water vapor that sometimes forms in the wake of an aircraft; vapor trail. |
| Contrast: |
The range of difference in the dark to light areas of a negative, print, or slide.
|
| Control surfaces: |
Parts of an aircraft that are activated by the controls to change the airflow around the surfaces of the aircraft. The changes in airflow cause the aircraft to roll, pitch, or yaw. Examples of control surfaces are: ailerons, elevators and rudders. |
| Control tower: |
Airport air traffic control tower. |
| Controls: |
Devices which allow the pilot to direct the movements of an aircraft. Examples of controls are: rudder pedals that control the rudders and cause the airplane to yaw; throttles that control the engines which generate thrust for the airplane; and the contro |
| Convection: |
The rising of warm air and the sinking of cool air. Heat mixes and moves air. When a layer of air receives enough heat from the Earth's surface, it expands and moves upward. Colder, heavier air flows under it which is then warmed, expands, and rises. The |
| Correction filter: |
Filter which alters the color rendition of a scene to suit the color response of the eye. |
| Cropping: |
Omitting or deleteing parts of an image when making a print or copy negative in order to improve the composition of the final image. |
| Crosswind leg: |
A flight path at right angles to the runway off its takeoff end. |
| Cumulonimbus: |
A vertically developed cloud, often capped by an anvil shaped cloud. Also called a thunderstorm cloud, it is frequently accompanied by heavy showers, lightning, thunder, and sometimes hail or gusty winds. |
| Cumulus: |
A cloud in the shape of individual detached domes, with a flat base and a bulging upper portion resembling cauliflower. |
| Cumulus Congestus: |
A large cumulus cloud with great vertical development, usually with a cauliflower-like appearance, but lacking the characteristic anvil shaped top of a Cb. |
| Cyan: |
Blue-green subtractive primary color which absorbs red and transmits blue-green. |
| Cyclic: |
Term used for the horizontal controls used to determine the attitude of a helicopter. Controls forward, sideways and backwards flight. |
 |
|
