Graphics Programs Reference
In-Depth Information
When you stand back from a mosaic, a perceptual shift occurs and you see the
picture made up of the tiles. The same thing happens in digital imaging with
pixels. Figure 1.8 shows the pixels within the red rectangle centered on the ball
in Figure 1.7.
FIGURe 1.8
Any digital image shown at full magnification (3200%) will appear as a
grid of pixels.
selecting a digital Camera
Camera manufacturers commonly advertise how many megapixels (millions
of pixels) their camera sensors sample. While more pixels means more detailed
images, more pixels also means more information to be stored. Processing large
amounts of data can slow down your computer and require additional invest-
ment in storage for your photos. Unless you plan to make large-sized prints, you
probably don't need to maximize the number of megapixels.
An often-overlooked and more important factor in the quality of photos a
camera can produce is the sensor size, a rectangular area measured in mil-
limeters. The full frame size of traditional 35mm cameras actually measures
