If I have a camera that lets me pick different aspect ratios, (4:3 or 3:2), which should I use?
Digital SLRs are typically 3:2, while compact cameras are typically 4:3. You will find some disagreement about which is the “best” aspect ratio. Keep in mind that traditional televisions are 4:3, while a common print size is 6″ by 4″, which is 3:2. If you expect to be editing your photos later in software, then I would suggest shooting in the native format of your sensor, but keeping your intended use in mind. For example, if you expect to print in 4×6, then you should leave some extra space on top or on bottom for cropping. Shooting in the native format of your sensor gives you more information and leaves options open for different uses later. If circumstances will force you to print or display your photos without the benefit of software editing first, then you might consider shooting in the aspect raio of your target device. The benefits of this are that your camera may provide hints to help you frame properly (by darkening parts of the LCD), and it will remove any uncertainty about
