Tuesday, September 15, 2009

On-Camera Fill Flash





The small, built-in flash on your camera is not meant to be a powerhouse that will enable you to capture large groups indoors or throw light any significant distance outdoors. Most are good to about 10 feet maximum, though range can be boosted somewhat with higher ISO settings (with the increased noise price that you pay.) Some have a bit more power than others, but rarely do they go beyond a fairly short range. However, there are times when the small output can be used for adding just a taste of light to highlight a foreground subject and to bring lighting balance into a contrasty scene.

An opportunity for just that situation came up when photographing along the Rio Pueblo in Northern New Mexico last year, where the foreground sat in deep shadow. I knew I wanted to retain those shadowed forms to highlight the bright foliage, but after the first shot I thought that the shadows were too dominant (fig 1). Near my shooting position sat a small bush with the same yellow coloration of the background that did not record in my first shot.

I raised the small flash on my camera and took a shot. I liked what it did for the composition but the foreground plant looked too bright, a result of hitting it with flash from a few feet away. I then chose to use flash exposure compensation at -1.5EV, a good practice when working close like this. The resultant shot helped balance the composition and brought some visual interest into the foreground.

So next time you are working in strong contrast, and want to compose to maintain the shape and form of the shadows, consider using the small pop-up flash, along with flash exposure compensation, to add some extra visual “kick” to your images.

1
Exposure: Spot meter reading on bright bushes in background, f/16 at 1/125 sec at ISO 100; 24mm (equivalent) lens.
2
Exposure: f/16 at 1/125 sec at ISO 100, fill flash (on-camera) set at -1.5EV flash exposure compensation.
Text and images copyright George Schaub 2009, all rights reserved

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