Chapter 7. Advanced Exposure
LEARNING MORE ABOUT THE T1i LIGHT METER AND EXPOSURE CONTROLS
Thereâs more to exposure than what weâve seen so far. In addition to motion and depth of field control, exposure control also lets you control tonality in your image. Your exposure control is very dependent on your light meter, though, so to really understand exposure, you have to learn about some of the workings of the T1iâs light meter. In this chapter, weâll go deeper into metering and exposure and explore some of the T1iâs image-processing options.
The Light Meter Revisited
In Chapter 1, we looked at the T1iâs light meter, which analyzes the light in your scene to determine an exposure that will yield an image thatâs neither too light nor too dark. The light meter is activated every time you half-press the shutter button, and while the automatic metering in the T1i is very good, it can be confused and wonât always calculate the best exposure for every scene. For example, consider this image:
Figure 7-1. Bad backlighting is leaving the subjectâs face in shadow.
Weâve looked at a bad backlighting problem before. Because of the bright background, the camera is biasing its metering toward the brighter portion of the image, and the resulting exposure leaves the person underexposed. ...
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