Operation Manual

Bayer pattern color filter array A specific arrangement of red, green, and blue lenses
attached to the surface of a digital image sensor. There are roughly twice as many green
lenses as blue and red to accommodate how the human eye perceives color. See also
charge-coupled device (CCD), complementary metal oxide semiconductor (CMOS), digital
image sensor.
bit depth The number of tonal values or shades of a color each channel in a pixel is
capable of displaying. Increasing the bit depth of color channels in an image’s pixels
exponentially increases the number of colors each pixel can express. See also color
channels, color depth.
Black & White adjustment An adjustment in Aperture that allows you to selectively
control the source red, green, and blue color channels when a color image is converted
to grayscale. See also adjustment, grayscale, image, monochrome.
black point compensation Black point compensation ensures that black and white
luminance values are appropriately scaled to fit within the range or gamut of the
destination device (printer, paper, and ink). Using black point compensation helps prevent
clipping in shadows because the blacks are scaled to fit within the gamut of the printer,
paper, and ink.
Black Point parameter An Exposure adjustment parameter in Aperture used to set the
blacks in the image. See also Exposure adjustment.
Blank setting A secondary Viewer setting that sets the secondary Viewer display to be
a blank screen. See also display, secondary Viewer.
Blur Quick Brush A type of Quick Brush adjustment that softens the area of the image
the adjustment is brushed on. See also adjustment, Brush HUD, Quick Brushes.
bounce lighting Natural and unnatural light sources (flash and tungsten) redirected
toward the subject using a reflective surface to give the effect of natural light as well as
fill-in shadows. See also color temperature, fill-in lighting, White Balance adjustment.
bracketing The process of taking three shots of the same image based on the aperture
and shutter values recommended by the light meter: a shot one stop under the
recommended exposure, a shot at the recommended exposure, and a shot one stop over
the recommended exposure. You can also narrow the bracketing range to fractions of a
stop. Bracketing is used in difficult lighting situations to ensure the scene is captured
with the correct exposure. See also automatic bracketing.
Brightness parameter An Exposure adjustment parameter in Aperture used to lighten
or darken an image. The adjustment affects the brightness values of the image’s midtones
the most. See also adjustment, Exposure adjustment, midtones.
877Glossary