Canon PowerShot A75 PowerShot A75 Camera User Guide - Page 78

Setting the Aperture

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Shooting - Advanced Functions z 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. z The aperture value and shutter speed change according to the zoom state as follows. Aperture Shutter Speed (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 z 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.

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76
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.
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.
Aperture
Shutter Speed
(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
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.
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.
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