Normal Lens - This category has a focal length of 50mm for 35mm cameras.
APS-sized film sensors - Short for Advanced Photo System, APS film comes in a cassette that automatically advances to the first frame when you close the back of the camera. At the end of the roll, the camera rewinds the film back into the cassette and closes the film cover. Most digital SLRs use image sensors that are the size of a frame of APS film, rather than 35mm film. Higher-end SLRs use full 35mm-sized sensors.
Ebook - A digital or electronic version of a book.
Composite Video - An analog video signal (NTSC, PAL or SECAM) that includes both luminance (brightness) and chrominance (color) signals encoded together to form a single signal.
Resolution - The measure of picture information increments. Measured horizontally as pixels, and vertically as lines.
Phase - The relationship between different frequencies for the same sound (the relative position of two sound waves with respect to one another, measured in degrees). Sounds are said to be "in phase" if the positive and negative sections of the waveform are precisely aligned.
Wi-Fi - Wireless Fidelity
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