Canon Pro90 PowerShot Pro90IS Camera User Guide - Page 63

Shutter Speed Display

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• At a shutter speed of 1/1000 second, the aperture presets to a value between F4.0 and F8.0. Shutter Speed Display The shutter speeds from 1000 to 4 in the display are actually the denominator of a fraction of a second. For example, 160 indicates a speed of 1/160 second. For slower speeds, quote marks indicate the decimal place, so that 0"3 indicates 0.3 second and 2" indicates 2 seconds. 1000 800 640 500 400 320 250 200 160 125 100 80 60 50 40 30 25 20 15 13 10 8 6 5 4 0"3 0"4 0"5 0"6 0"8 1" 1"3 1"6 2" 2"5 3"2 4" 5" 6" 8" The display of shutter speeds from 1/4 to 1/1000 second differs between the display panel and LCD monitor or viewfinder. Shutter Speed Display Panel LCD Monitor/Viewfinder 1/1000 sec. . . . 1/4 sec. . . . 0.8 sec. . . . . . . . . . . . . 1/1000 . . . 1/4 . . . 0"8 . . . 8 sec. 8" Shooting - Selecting Particular Effects 61

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Shooting - Selecting Particular Effects
61
•
At a shutter speed of 1/1000 second, the aperture presets to a value between F4.0
and F8.0.
Shutter Speed Display
The shutter speeds from 1000 to 4 in the display are actually the denominator of a
fraction of a second. For example, 160 indicates a speed of 1/160 second. For
slower speeds, quote marks indicate the decimal place, so that 0"3 indicates 0.3
second and 2" indicates 2 seconds.
1000
800
640
500
400
320
250
200
160
125
100
80
60
50
40
30
25
20
15
13
10
8
6
5
4
0"3
0"4
0"5
0"6
0"8
1"
1"3
1"6
2"
2"5
3"2
4"
5"
6"
8"
The display of shutter speeds from 1/4 to 1/1000 second differs between the
display panel and LCD monitor or viewfinder.
1/1000 sec.
.
.
.
1/4 sec.
.
.
.
0.8 sec.
.
.
.
8 sec.
.
.
.
.
.
.
.
.
.
1/1000
.
.
.
1/4
.
.
.
0"8
.
.
.
8"
Shutter Speed
Display Panel
LCD Monitor/Viewfinder