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- K (Kelvin)
- Abbreviation for Kelvin temperature, the measurement of the redness or blueness of white light. This is written without the degree sign. Daylight at noon, for example, has a Kelvin temperature of about 5500K, while photographic tungsten lamps are 3200K. Technically it is a measurement of the colour of white or gray based on the temperature to which a black body must be heated to produce that colour of white.
- K 14
- Kodak's chemical process for developing Kodachrome slides.
- Can be used to mean either a keyboard for a computer or more commonly "KB" means a kilobyte of data.
- Kernel size
- The number of pixels sampled as a unit during image manipulation and sharpening processes.
- Tightening the space between letters.
- Key light
- A studio light used to control the tonal level of the main area of the subject.
- The distortion of a projected slide or movie caused by the projector lens axis not being at a 90 degree angle to the screen. The image will appear wider at one edge than on the opposite and the image will not be uniformly sharp.
- An amount of computer memory, disk space, or document size consisting of approximately one thousand bytes. Actual value is 1024 bytes.
- Kodak PhotoCD
- A CD-ROM containing digital images; the CD is created with technology developed by Kodak; each scanned image on the disk is available in five sizes; about 1000 images will fit on a single PhotoCD.