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Meaning of main digital camera terminology
This is a list of some of the main terms for using a digital camera
- Pixels: Are the smallest piece of information that make up an image. Pixels are tiny and one dot on an image is made up of many pixels. Every pixel has its own different colours and each pixel can have up to four colour components.
- Megapixels: A megapixel is 1 million pixels, and is a measurement of digital photo quality. A 1600x1200 pixel image size is a common size and is said to have "1.9 megapixels" (1600×1200 = 1,920,000)
- A 5 Megapixel digital camera: A camera capable of shooting an image measuring five million pixels in size.
- Pixel Count: The amount of pixels that an image contains is called the pixel count. The clarity and sharpness of an image will look better with more pixels.
- PPI: Or pixels per inch", is a term used to describe an element in picture quality. It is a measure of the amount of pixels to be printed within a specific area. If the number of pixels per inch that is displayed is higher the better the image will be to the human eye.
- Aperture: The aperture ensures proper exposure to light with your camera. It sends light to the sensor by permitting the light to travel through a digital camera interior.
- Digital Camera Memory: Digital images or photographs are stored in a location called memory. This is an electronic storage space built into your digital cameras for the purpose of storing pictures usually in the form of Secure Digital Cards, Compact Flash Cards, SmartMedia Cards, XD Cards. Digital camera memory varies in size form 64 MB to 1 GB and above.
- Digital zoom: Is obtained by focusing in on a portion of an image and enlarging it with a decrease in a cameras apparent angle of view. This function is accomplished within the electronics of the digital camera without any physical adjustment of the camera's optical lenses, but results in a loss of picture quality.
- Optical Zoom: Is the ability of a lens to change its focal length and enlarge a view it is the opposite of Digital zoom in that it uses the physical properties of lens assemblies. It is a better option than a digital zoom as it does not alter the quality for a recorded image.
- JPEG: The perfect file format used for compact storage of groups of pixels in a photograph. This particular compression ratio was fixed by the Joint Photo Experts Group to reduce the picture size. The degree of compression can be adjusted however, the higher you compression your image will result in a larger loss of picture quality.
- TIFF: Is another file format for storing images. "Tagged Image File Format" is the longer version. TIFF does not have a loss of information but has a downside of having very large file sizes.
- Digital Camera Sensor: The digital imaging sensor converts incoming light into an electrical signal then into a digital image you can then view and print. Within a digital camera it performs the role of a "re-useable negative".
- Shutter Speed: The common term for exposure time is the duration which the camera's aperture is opened allowing into your camera. Longer shutter speeds leave the aperture open longer, letting more light in and resulting in more exposure.
- White Balance: In a digital camera is simply a way to correct all the colours in your image to take account of the light they were shot in. Various reasons contribute to the intensity of light. However modern digital cameras usually have preset values you can
- Switch on to compensate for the different light intensities which then calculate all other colours based upon this setting.
- RAW/NEF: Before processing an uncompressed image shot by a digital camera. Raw/NEF image files are sometimes called digital negatives Canon introduced the RAW picture format, while Nikon calls this format NEF.
What are some of the main events that happened in the world this year (2008)?
I already have a few things like heath leger dying, the atoms colliding (people thought the earth was gonna be sucked into a black hole when they did that), x factor winner etc.
Bad things and good things pls!
Its for an assembly at school 
olympics
UN Assembly - Ahmadinejad Injects Some Cold, Hard Facts; US Delegates Walk Out In Face Of Truth
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