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Canon is a leading provider of consumer, business-to-business, and industrial digital imaging solutions.
Film ratings, expressed as a number indicating a film's sensitivity to light. The larger the number, the more sensitive and faster the film is. While traditional cameras don't have a specific ISO rating, digital cameras do as a way to express their sensitivity to light.
Industry:Consumer electronics
A lens surface that possesses more than one radius of curvature. The aspherical elements compensate for the multitude of lens aberrations common in simpler lens designs.
Industry:Consumer electronics
Allows the camera to automatically focus through the lens, rather than by moving the lens back and forth manually. See also TTL.
Industry:Consumer electronics
a.k.a. matrix metering or segmented metering. This type of system takes a light reading from many different areas of the frame. The microprocessor then calculates this information into a composite reading that takes into account the differences within the frame.
Industry:Consumer electronics
A method of storing digital information that maps an image pixel out, bit by bit. The density of the pixels determines how sharp the image resolution will be. Most image files are bit mapped. This type of file gives you the 'jaggies,' stair-stepped edges that become apparent when you zoom in. Bitmap images are compatible with all types of computers. The desktop for all Windows machines uses .bmp files, while the Macintosh uses .pict files. Most Internet publishing and e-mail use JPEG or .JPG and .GIF (89a) formats. Canon PowerShot cameras store their pictures in JPEG format.
Industry:Consumer electronics
The bit-mapped file format used by Microsoft Windows. The BMP format supports RGB, indexed-color, grayscale, and Bitmap color modes.
Industry:Consumer electronics
This is an excellent method of coming to an understanding of the f/stop function. It is a technique in which takes a subject and takes a number of pictures from the same viewpoint at differing levels of exposure. Half or one f/stop (+/-) differences are usually selected depending on the subject.
Industry:Consumer electronics
Charge-coupled device. The image sensor that separates the spectrum of color into red, green and blue for digital processing by the camera. In digital cameras both Area and Linear CCDs are used. A CCD captures only black-and-white images. The image is passed through red, green and blue filters in order to capture color.
Industry:Consumer electronics
A square or rectangular CCD that can capture an entire image at once, which is essential for dynamic subjects and flash photography.
Industry:Consumer electronics
a.k.a. scanner-type CCD, these sensors are long and thin, and capture an image by recording a vast number of individual "exposures" while scanning across the picture frame. These are best suited for still subjects and continuous illumination.
Industry:Consumer electronics
