Av Setting The Aperture - Canon POWERSHOT a75 User Manual

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Shooting – Advanced Functions
Please note that camera shake
becomes a factor at low shutter speeds.
If the camera shake warning appears
in the center of the LCD monitor, secure
the camera to a tripod before shooting.
The aperture value and shutter speed
change according to the zoom state as
follows.
Shutter Speed
Aperture
(seconds)
F2.8 to 1/1250
Wide Angle F3.2 - 4.0 to 1/1600
F4.5 - 8.0 to 1/2000
F4.8 to 1/1250
Telephoto F5.6 - 7.1 to 1/1600
F8.0 to 1/2000
The fastest shutter speed for flash
synchronization is 1/500 second. The
camera automatically resets the shutter
speed to 1/500 second if a faster speed
is selected.
76
Shutter Speed Display
The numbers in the table below indicate
the shutter speed in seconds. For slower
speeds, quote marks indicate the
decimal place, so that 0"3 indicates 0.3
second and 2" indicates 2 seconds.
15" 13" 10" 8" 6" 5" 4" 3"2 2"5 2" 1"6 1"3
1" 0"8 0"6 0"5 0"4 0"3
1/4 1/5 1/6 1/8 1/10 1/13 1/15 1/20 1/25 1/30
1/40 1/50 1/60 1/80 1/100 1/125
1/160 1/200 1/250 1/320 1/400 1/500
1/640 1/800 1/1000 1/1250 1/1600
1/2000
Setting the Aperture
The aperture adjusts the amount of light that
passes through the lens. Selecting a lower
aperture value (opening the aperture) allows
you to fade the background.
A higher aperture value (closing it) brings the
entire range from foreground to background
into focus.