|
|
|||
 Learn
To Draw |
Learn
To Paint |
Photoshop
Elements |
Animation
Menu |
Art
Principles |
Art
Appreciation |
Automatic exposure control is one of the most useful features of your camera. The convenience of having the camera automatically measure the brightness of the light, then set the correct shutter speed and aperture will be particularly evident to you if you have ever used a camera that did not function automatically in that way. It means you can often let the camera deal with the exposure while you concentrate on the image. This is especially helpful when photographing action scenes where there isn’t time to evaluate the situation and then set the controls manually.
You shouldn’t, however, always leave the exposure to the automatic system. Automatic exposure works well in most, but not all, lighting conditions. At times the lighting can fool any automatic exposure system into producing an underexposed (too dark) or overexposed (too light) image. Although you can make adjustments to a poorly exposed image in a photo-editing program, you’ve lost image information in the shadows or highlights that can’t be recovered. You will find it better in some situations to override the automatic exposure system at the time you take the picture.
Typical situations in which you might want to override automatic exposure include interesting and unusual lighting situation. For example, if you want to photograph into the sun, record a colorful sunset, show the brilliance of a snow-covered landscape, or convey the dark moodiness of a forest, you will probably need to adjust exposure, rather than let the camera make exposure settings automatically.
5.2 HOW EXPOSURE AFFECTS YOUR IMAGES
5.3 WHEN AUTOMATIC EXPOSURE WORKS WELL
5.4 WHEN TO OVERRIDE AUTOMATIC EXPOSURE