Refer to your camera
manual for further details.
3. Compose and shoot the picture.
Understand Shutter Speeds
The shutter speed determines how long the shutter remains open to record the
scene. Shutter speeds are measured in fractions of a second or, when shooting
a long exposure, in seconds. If you??™re shooting
in dim conditions without a flash, you??™ll need
a slow shutter speed, such as 1/15 of a second.
The rule of thumb for the slowest shutter speed
at which you can handhold a camera is the
reciprocal of the lens focal length (this refers to
the 35-mm equivalent). In other words, if you??™re
shooting an image with a digital SLR using a
20-mm lens with a focal length multiplier of
1.5, you??™ll need a tripod with any shutter speed
slower than 1/30 of a second. You can, however,
use a slow shutter speed to create artistic
blurs, such as the headlight patterns shown in
Figure 2-9. Slow shutter speeds are also useful
Figure 2-9: When you shoot at
a slow shutter speed, you can
create artistic blurs, such as
headlight patterns.
2
Digital Photography QuickSteps Getting the Most from Your Camera 31
32 PC QuickSteps Getting to Know Your PC 1 2 3 4 5 6 7 8 9 10
when photographing a stationary subject in dim lighting conditions.
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