Study Guide Quiz 4 Correcting Digital Photography

1. Cropping- The process of removing portions of an image to create, focus, or strengthen the composition.

2. Camera lenses- They exhibit different types of defects at a certain focal length, f-stops, and focus distance.

3. Barrel distortion- Causes straight lines to appear to bend inward.

4. Level adjustment- Corrects the tonal range and color balance of an image by adjusting intensity levels of image shadows, mid tones, and highlights.

5. Keystone Distortion- It occurs when an object is photographed from an angle instead that from a straight-on view.

6. Histogram-It illustrates how pixels in an image are distributed by graphing the number of pixels at each color intensity level.

7. Vignetting. Cuases the edges, (corners) of an image to be darker than the center.

8. Pincushion distortion- Causes straight lines to appear to bend inward.

9. Chromatic aberration- Is caused by the failure of the lens to focus different colors to the same spot.

10. Curves adjustment- It lets you adjust points throughout the tonal range of an image.