It is important to crop in the camera as often as possible. However, if you are hurrying to capture a moment and you abandon your cropping principles in order to catch it, you can fix it after the fact. Any image-editing software can aid you in this endeavor.
A successful image is often all about gestures and expression, so crop to preserve and enhance those elements.
Make sure to crop in the way that best services the story you are trying to tell. For example, crop out the people in the background having an unrelated conversation, but save the part where the bride and groom are holding hands. A successful image is often all about gestures and expressions, so crop to preserve and enhance those elements of the photograph. You may find that your cropping will result in a photo with a nontraditional aspect ratio—like a square or a long, narrow panoramic shape—and that’s perfectly fine. You can mat the image to fit a traditional frame size.
Equipment: Canon EOS-1D Mark III with EF 24–70mm f/2.8L IS USM lens. Exposure: f/2.8 at 
second and ISO 160. Focal length: 48mm.
Equipment: Canon EOS-1D Mark III with EF 100mm f/2.8L Macro IS USM lens. Exposure: f/2.8 at 
second and ISO 250.
