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IMT – Cholla Training Center
synonymous with black and white.
Highlights The brightest parts of a photo.
Histogram A graphic representation of the range of tones from dark to light
in a photo. Some digital cameras include a histogram feature that
enables a precise check on the exposure of the photo.
Image browser An application that enables you to view digital photos. Some
browsers also allow you to rename files, convert photos from one
file format to another, add text descriptions, and more.
Image editor A computer program that enables you to adjust a photo to
improve its appearance. With image editing software, you can
darken or lighten a photo, rotate it, adjust its contrast, crop out
extraneous detail, remove red-eye and more.
Image resolution The number of pixels in a digital photo is commonly referred to as
its image resolution.
Inkjet A printer that places ink on the paper by spraying droplets
through tiny nozzles.
ISO speed A rating of a film's sensitivity to light. Though digital cameras
don't use film, they have adopted the same rating system for
describing the sensitivity of the camera's imaging sensor. Digital
cameras often include a control for adjusting the ISO speed; some
will adjust it automatically depending on the lighting conditions,
adjusting it upwards as the available light dims. Generally, as ISO
speed climbs, image quality drops.
JPEG A standard for compressing image data developed by the Joint
Photographic Experts Group, hence the name JPEG. Strictly
speaking, JPEG is not a file format, it's a compression method that
is used within a file format, such as the EXIF-JPEG format
common to digital cameras. It is referred to as a lossy format,
which means some quality is lost in achieving JPEG's high
compression rates. Usually, if a high-quality, low-compression
JPEG setting is chosen on a digital camera, the loss of quality is
not detectable to the eye.
LCD Liquid Crystal Display: a low-power monitor often used on the top
and/or rear of a digital camera to display settings or the photo
itself.
Media Material that information is written to and stored on. Digi tal
photography storage media includes CompactFlash cards and CDs.
Megabyte (MB) A measurement of data storage equal to 1024 kilobytes (KB).
Megapixel Equal to one million pixels.
Memory Stick® A memory card slightly smaller than a single stick of chewing
gum. Like CompactFlash and SmartMedia, it is flash-based
storage for your photos.
NiMH Nickel Metal-Hydride: a type of rechargeable battery that can be