swheeler Page 33 of 34
IMT – Cholla Training Center
recharged many times. NiMH batteries provide sufficient power to
run digital cameras and flashes.
Online photo printer A company that receives digital photos uploaded to its
Web site, prints them, then sends the prints back by mail or
courier.
Panning A photography technique in which the camera follows a moving
subject. Done correctly, the subject is sharp and clear, while the
background is blurred, giving a sense of motion to the photo.
Pixel Picture Element: digital photographs are comprised of thousands
or millions of them; they are the building blocks of a digital photo.
RAW The RAW image format is the data as it comes directly off the
CCD, with no in-camera processing is performed.
Red-eye The red glow from a subject's eyes caused by light from a flash
reflecting off the blood vessels behind the retina in the eye. The
effect is most common when light levels are low, outdoor at night,
or indoor in a dimly-lit room.
RGB Red, Green, Blue: the three colors to which the human visual
system, digital cameras and many other devices are sensitive.
Saturation How rich the colors are in a photo.
Sensitivity See ISO speed.
Serial A method for connecting an external device such as a printer,
scanner, or camera, to a computer. It has been all but replaced by
USB and FireWire in modern computers.
Sharpness The clarity of detail in a photo.
Shutter speed The camera's shutter speed is a measurement of how long its
shutter remains open as the picture is taken. The slower the
shutter speed, the longer the exposure time. When the shutter
speed is set to 1/125 or simply 125, this means that the shutter
will be open for exactly 1/125th of one second. The shutter speed
and aperture together control the total amount of light reaching
the sensor. Some digital cameras have a shutter priority mode
that allows you to set the shutter speed to your liking. See also
aperture.
SmartMedia™ A wafer-thin, matchbook size memory card. This is also a flash-
memory based storage medium.
Thumbnail A small version of a photo. Image browsers commonly display
thumbnails of photos several or even dozens at a time. In
Windows XP's My Pictures, you can view thumbnails of photos in
both the Thumbnails and Filmstrip view modes.
USB Universal Serial Bus: a protocol for transferring data to and from
digital devices. Many digital cameras and memory card readers
connect to the USB port on a computer. USB card readers are
typically faster than cameras or readers that connect to the serial
