Canon A640PS Digital Camera User Manual


 
44
zThe aperture value and shutter speed change according to
the zoom state as follows.
zThe 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.
Shutter Speed Display
zThe following shutter speeds can be set. 1/160 indicates
1/160 second. Also, 0"3 indicates 0.3 second and 2"
indicates 2 seconds.
zYou can change the combinations of shutter speeds and
aperture values without altering the exposure (p. 53).
Aperture value Shutter Speed (seconds)
Maximum
Wide Angle
F2.8 – 3.2 15 – 1/1250
F3.5 – 4.0 15 – 1/1600
F4.5 15 – 1/2000
F5.0 – 8.0*
1
15 – 1/2500
Maximum
Telephoto
F4.1 – 4.5 15 – 1/1250
F5.0 – 6.3 15 – 1/1600
F7.1 – 8.0*
2
15 – 1/2500
*1 In mode, the maximum wide angle aperture may be set as
high as F11 in some shooting conditions.
*2 In mode, the maximum telephoto aperture may be set as
high as F16 in some shooting conditions.
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 1/2500