Digital Photography Composition For Dummies

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In this book, I use the following conventions to make sure the text is consistent and easy to understand:

For each photograph, I include the following information:

• Focal length: This number shows the angle of view provided by the particular lens used. It determines how much of your scene is captured when composing a shot.

• Shutter speed: This number indicates how long it took to complete the exposure (usually measured in fractions of a second). It determines how precise the moment of capture is, and it's particularly important when photographing subjects in motion.

• Aperture: This number shows how much light the lens let in at the time of exposure (measured by an f-stop). It helps to regulate your depth of field, which determines how much of your scene is sharp or blurry.

• ISO: This number displays how sensitive the digital sensor is to light during the time of the exposure. A sensitive ISO rating (determined by a higher number) can produce a properly exposed image more quickly and with less light than a less sensitive rating (determined by a lower number).

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