Canon PowerShot A650IS User Manual page 85

Shooting Using the Mode Dial
183
I
Tv Setting the Shutter Speed
~
r-t
See Functions Available in Each Shooting Mode (p. 214).
Shooting Mode
Tv
When you set the shutter speed, the camera automatically selects an
aperture value to match the brightness of the subject. Faster shutter
speeds allow you to catch an instantaneous image of a moving subject,
while slower speeds create a flowing effect and allow you to shoot
without a flash in dark areas.
11
Set the mode dial to Tv.
Configure the shutter
speed.
• Use the
+
or .. button to change
the shutter speed.
Shutter Speed
31
Shoot.
• If the aperture value is shown in red, the image is
underexposed (insufficient light) or overexposed (too much
light). Use the
+
or .. button to adjust the shutter speed until
the aperture value shows in white.
The nature of CCDs is such that noise in the recorded image
increases at slow shutter speeds. This camera, however,
applies special processing to images shot at shutter speeds
slower than 1.3 seconds to eliminate the noise, thereby
producing high-quality images. (However, a certain amount of
processing time may be required before the next image can be
shot.)
•