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A file of which the contents have been compressed with the use of a program such as DropStuff or WinZip. It can sent via e-mail and unzipped by the recipient without losing any data. The contents can consist of one large file, or more than one file. This method is especially useful when sending someone several image files by e-mail. Most programmes will allow the sender to make the zip file self-extractable, turning the .zip file into an .exe file.
A system developed by Ansel Adams that considers subject brightness and negative exposure which, when combined with developing and printing gives you total control over the final prints tone values.
An electronic flashgun feature that allows the flash coverage to be adjusted. Flashguns are usually designed to cover the same angle as a standard lens, so when a wide angle lens is used you may find the edges of the frame are darker. A zoom head pulls closer to the flashtube to widen the angle and extends to throw the flash light out at a more concentrated angle.
A zoom lens offers a continuously variable focal length, normally without the need to refocus. A wide-angle zoom covers a range of focal lengths that include a wide angle setting. A standard zoom goes from a slight wide angle to telephoto and a telezoom covers a range of telephoto focal lengths. Some zoom lenses are called super zooms because they cover a larger range of focal lengths from wide angle to longer telephoto.
Cameras with zoom lenses have either a rocker control, two buttons or a lever to adjust through the focal lengths of the lens. You can adjust this while looking through the viewfinder and then let go when the desired angle of view is reached.
A new feature that some digital cameras have to magnify the preview image on the LCD panel. This is useful for checking image quality, which is difficult to check on a normal unmagnified LCD view.