Preview your images' true color and tone by tethering your camera to your computer
Set up a still life with your computer (desktop or notebook) nearby, turn the camera on, and connect it to the computer. In Lightroom 3 or 4, go to File > Tethered Capture > Start Tethered Capture. Fill in your session name and destination. Choose your metadata template, add keywords to tag your images, then click OK to start shooting.