Regardless if one takes a photojounalistic, classical, or illustrative approach to their wedding photography, what is critical is the quality of the final image. That means taking that wonderful technology called digital cameras, off of their 'P"-for Professional Mode (just kidding...P is Program Mode) and put the camera on Manual. Setting the camera on to Manual Mode is the only way one can override what the 'camera thinks' is the proper exposure and have control over that yourself and allow your creativity to shine. Yes, I do take a 'test shot, in Program or Aperture Priority Mode, in order to understand the exposure parameters (yes...I am using my in camera metering system as my own Light Meter), but then I switch to manual and reset my exposure (shutter and aperture) to match my light settings on my Quantum (power and distance from the subject) in order to take advantage of the available ambient light, and then take my shot. I also recommend not using that on-camera direct flash in simple TTL mode, except in the case of tight quarters where I would use a bounce off of a wall, a reflector, umbrella, or even use one of the groomsmen and bounce the light off of his shirt if needed (yes I have been in the position where I have done that too). In most cases I have an assistant who holds a Quantum T5DR flash mounted on a Monfrotto monopod controlled by a freewire transmitter velcro-ed to my on camera flash and plugged into my camera sync outlet of my Canon 7D. I set the Quantum, again to manual mode, and have my assistant control the quantity of light (the Quantum is 150 WS of power which is almost three times the power of a Canon 580EX II Speedlight).
In this image I decided to use the Canon 70-200mm f2.8 Model II Telephoto lens. Yikes...this costs more than the Canon 7D body, as I almost had an earlier heart attack when I discovered the price prior to purchasing this lens from B&H Photo last Spring. This lens, albiet expensive, was well worth the investment as you can see from this image. The background is pleasantly out of focus (what us photographers refer to as Bokeh) with a sharp crisp image of the subjects. Again I was using off camera flash using the Quantum from camera left at 45 degrees from the axis of the Bride's face, shot through a translucent Umbrella (to diffuse the key light source) and create a flattering loop lighting pattern on the subjects. I used the camera in manual mode as I changed my shutter speed, above what would be considered the 'correct in-camera exposure' in order to allow the lens to capture the ambient light available at the location. Notice I also paid attention to the specific lighting pattern. In this case I used a modified 'loop lighting pattern' on my subjects. I also took the final image into Adobe Lightroom 3 and make some needed adjustments, using the 'Develop' module, and added some vingette around the edges (very fashionable now) in order to focus the viewers attention further on the subjects.