2.1. Metering Modes2.1.1. Matrix metering2.1.2. Center-weighted metering2.1.3. Spot metering2.2. Adjusting Exposures with EV2.2.1. Using histograms2.2.2. Bracketing exposures and other parameters2.2.3. Customized exposure and contrast tweaks2.3. ISO Sensitivity2.4. Using Noise Reduction2.5. Using Automatic, Semi-Automatic, and Manual Modes2.5.1. Programmed Auto2.5.2. Shutter Priority2.5.3. Aperture Priority2.5.4. Manual exposure2.6. Working with Autofocus2.6.1. Autofocus basics2.6.2. Focus modes2.6.3. Understanding the focus zones2.6.4. Choosing the focus zone manually2.6.5. Letting the D200 choose the focus zone automatically2.6.6. Locking focus/exposure2.7. Other Image Parameters2.8. Setting White Balance2.8.1. Creating white balance presets2.8.2. Using white balance presets