2.1. Understanding and Using Autofocus2.1.1. About autofocus points and autofocus modes2.1.2. Does focus-lock and recompose work?2.1.3. Selecting AF points2.1.4. Verifying sharp focus2.2. Selecting a Metering Mode2.3. Evaluating Exposure2.3.1. Brightness histogram2.3.2. RGB histogram2.4. Modifying Exposure2.4.1. Automated Brightness and Contrast Correction2.4.2. Highlight Tone Priority2.4.3. Auto Exposure Lock2.4.4. Auto Exposure Bracketing2.4.5. Exposure Compensation2.5. About ISO settings2.5.1. ISO Range, Expansion, and C.Fn options2.5.2. Setting the ISO and extended range ISO2.6. Selecting a Drive Mode2.7. Viewing and Playing Back Images2.7.1. Single-Image playback and Magnified view2.7.2. Index display2.7.3. Jump quickly among images2.8. Erasing Images2.9. Protecting Images2.10. Displaying Images on a TV2.11. Restoring the Camera's Default Settings2.12. Cleaning the Image Sensor2.12.1. Obtaining Dust Delete Data2.12.2. Applying Dust Delete Data2.12.3. Cleaning the sensor manually