によって Clau Zaragoza 12年前.
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Study Guide Digital-Photography
Claudia Zaragoza 8E, #21
Digital Photography
Levels Adjustment
Corrects the tonal range and color balance of an image by adjusting intensity levels of image shadows, midtones, and highlights.
Pincushion Distortion
Causes straight lines to appear to bend inward.
Vignetting
Causes the edges, especially the corners, of an image to be darker than the center.
Histogram
Illustrates how pixels in an image are distributed by graphing the number of pixels at each color intensity level.
Keystone Distortion
Occurs when an object is photographed from an angle rather than from a straight-on view.
Curves Adjustment
Lets you adjust points throughout the tonal range of an image (from shadows to highlights).
Chromatic Aberration
Is caused by the failure of the lens to focus different colors to the same spot.
Barrel Distortion
Causes straight lines to appear to bow outward.
Camera Lenses
Can exhibit different types of defects at certain focal lengths, f-stops, and focus distances.
The Image Rotation
Commands let you rotate or flip an entire image.
Cropping
The process of removing portions of an image to create focus or strengthen the composition.
