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A filter that makes a picture appear sharper by increasing edge contrast. Its usually supplied with scanners and comes with some image-editing programs such as Photoshop.
A term used to describe sending a file via your modem to a Web site, or from the computer back to your digital camera.
A technique used to gain speed with a film. You manually override its ISO speed, using the film speed dial or exposure compensation dial, to make the film more sensitive. To film would then be given longer in the developer.
This is a string of letters and numbers that identify and connect you to a Web site or web page. If you type the wrong thing in by mistake, you may become connected to another site or receive an error message. The URL usually starts with http://www.
Peripheral connector that allows items such as printers, scanners and digital cameras to be connected and unconnected to the computer without turning it off. The computer detects when an item has been plugged in and asks you to install the necessary software if it isn’t already on board. Up to 127 items can be connected at once.
USB 2.0 works in the same way as the original USB standard, and even looks the same. However it uses a much higher bandwidth, up to 40 times faster than the original standard. USB 2.0 also has the advantage of being backwards compatible with existing USB technology, so all your old devices will still work from a USB 2.0-capable system.
A colourless filter thats used to absorb UV light and reduce haze when shooting with black & white film.
Part of the spectrum that has a wavelength below 390nm.