In these cases, it's handy to have a digital camera that offers manual exposure compensation, allowing you to set the exposure a few stops brighter or darker. Higher ISO ratings mean the camera is more sensitive to light and can take pictures in darker settings. The LCD screen is especially useful because you can see what your picture will look like before you take it. It also allows you to look at the photos you've already taken. As mentioned above, using the LCD screen is a significant battery drain, so if you use it often, have extra batteries on hand.
Most digital cameras come with a built-in flash.
Some cameras include additional features, such as red-eye reduction or night portrait mode. Night portrait mode sets your flash to go off at the beginning or end of a long exposure, letting you take portraits set against a night scene, such as a cityscape. If your digital camera has an LCD screen on the back, you'll be able to view images stored in memory. Some cameras even let you display pictures on the LCD screen in thumbnail format, usually 9 or 12 to a screen. A self-timer sets your digital camera for a delayed exposure, usually giving you about 10 seconds before it takes the picture.