Nikon D5300 参考手册

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页码 308
83
A
Shutter Speed and Aperture
Shutter speed and aperture are shown in the viewfinder and information display.
Shutter speed
Aperture
Fast shutter speeds  (
1
/
1600
s in this example) 
freeze motion.
Slow shutter speeds (here 1 s) blur motion.
Large apertures (such as f/5.6; remember, the 
lower the f-number, the larger the aperture) 
blur details in front of and behind the main 
subject.
Small apertures (f/22 in this case) bring both 
background and foreground into focus.