Dock This is a device that allows your camera to directly connect and interface with your computer. All you need to do is place your camera in the dock, push a button (if it's not already automatic) and watch your images start to upload. This is referred to as the easiest method for connecting as well as transferring images from your digital camera to your computer. Most docks are known to double as a battery re-charger for those cameras that are outfitted with rechargeable batteries.
Power source: Batteries Digital cameras quickly drain the power out of batteries and for this cause it is extremely wise to purchase rechargeable batteries and a re-charger. You will save more money and time in the long run by choosing this route, than having to keep purchasing regular batteries over and over again.
AC Adapter Having an AC adapter is a great way to ensure continued shooting without worrying about power. With this accessory, you are able to shoot from a tripod or remain tethered to a computer for as long as choose. It draws its source of power from an electrical outlet which means that you can save your battery life.
Exposure controls: Auto-Exposure This setting is great for those who want to rely on the default option on most digital cameras. This allows the camera instead of the user to have total exposure control. There is a sensor on the camera which measures the light reflected from a scene or subject and in turn sets the optimum combination of f-stop (aperture) number and shutter speed to produce the best results.
Exposure Value Compensation This is also known as EV and refers to the ability to adjust the overall brightness or darkness in exact increments. You can either move the exposure compensation up or down depending on the exposure you desire. The more expensive cameras have two to three f-stop EV settings in both directions, in one-third f-stop increments while less-expensive cameras have one to two f-stop EV in both directions, in only one-half f-stop increments.
Shutter Priority This feature allows you to set the shutter speed while maintaining a perfect exposure. The camera automatically reduces the f-stop setting when you increase the shutter speed to capture action shots and if you decrease shutter speed, the aperture increases, thus maintaining the same exposure values.
Burst Mode It is worthy to note that many digital cameras have the ability to take a series of pictures in a very short amount of time. This is great for photography that requires a motor drive like sequence so that you don't miss a frame. Unfortunately, you won't be able to use the camera's flash in burst mode, and in order to save all the images taken, it will take a few seconds longer than usual resulting in a longer wait time before the camera's ready to shoot again.