Filter
Top Products
Microsoft Picture It! Companion Guide
23
Chapter 2: Making the Most of Your Camera
At the other extreme, you might set the shutter to stay open for four seconds, or
even more for low-light night photography without a flash. But shutter speeds
slower than 1/30
th
of a second increase the likelihood that slight movements in
your hand while you take the shot will cause a blurred photo. To avoid camera
shake, mount your camera on a tripod or other firm surface for slow shutter
speeds.
To accommodate the low light of this twilight scene, the camera was mounted on a tripod and
set to a slow shutter speed.
Some cameras offer a shutter priority mode that sets the aperture automatically
after you set the shutter speed. This can be useful if you’re in a situation where
shutter speed is more important than aperture, like when you’re shooting a
subject in motion.
ISO Setting or Equivalent
When shooting on film, you have the opportunity to select different types of
film for specific uses. Films are available in different speeds that are more
sensitive or less sensitive to light.
ASA versus ISO
If you have an older
camera, the film speed
dial might be labeled
ASA instead of ISO.
These film speed
ratings are the same,
and the ratings are
interchangeable.