Olympus E-M1 - Manual (Page 39)

39 EN
Basic operations
5
Choosing aperture (A aperture-priority mode)
In mode A, you choose the aperture and let the camera automatically adjust shutter
speed for optimal exposure. Rotate the mode dial to A.
Front dial
Lever
Rear dial
Dial
Position of the lever
1 2
r
Exposure
compensation
ISO
o
Aperture value White balance
• Larger apertures (lower F-numbers) decrease depth of
fi eld (the area in front of or behind the focus point that
appears to be in focus), softening background details.
Smaller apertures (higher F-numbers) increase depth
of fi eld.
Aperture value
250 250 F5.6 01:02:03 01:02:03
38 38
L N
A 0.0 0.0
ISO
400
FullHD
F
When shooting using live
view
Setting the aperture value
Reducing aperture value   Increasing aperture value
F2 F3.5 F5.6 F8.0 F16
• The shutter speed display will blink if the camera is unable to achieve optimal
exposure.
Warning display
example (blinking)
Status Action
30" 30" F5.6 F5.6
The subject is
underexposed.
• Decrease the aperture value.
8000 8000 F5.6 F5.6
The subject is
overexposed.
• Increase the aperture value.
• If the warning display does not disappear,
the metered range of the camera is
exceeded. A commercially available ND
fi lter (for adjusting the amount of light) is
required.
• The aperture value at the moment when its indication blinks varies with the lens type and
focal length of the lens.
• When using a fi xed [ISO] setting, change the setting. g [ISO] (P. 57)
Preview function
You can preview the focus range (depth of fi eld). While pressing the preview button, the
aperture is stopped down to the set aperture value.