Sony SLT-A58 - Manual (Page 159)

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Setting the other camera functions
When you set the shutter speed to 1 second or longer (Long exposure
shooting), noise reduction is turned on for the same duration that the shutter
is open. This reduces the grainy noise typical for a long exposure. When
noise reduction is in progress, a message appears and you cannot take
another picture. Select [On] to prioritize the image quality. Select [Off] to
prioritize the timing of shooting.
MENU button t 2 t [Long Exposure NR] t Select the
desired setting
Notes
• Noise reduction is not performed even when [Long Exposure NR] is set to [On] in
the following situations.
– When the exposure mode is set to [Sweep Panorama], [Tele-zoom Cont. Priority
AE], or [Sports Action] or [Hand-held Twilight] in [Scene Selection]
– When [Drive Mode] is set to [Cont. Shooting] or [Bracket: Cont.]
– When [ISO] is set to [Multi Frame Noise Reduct.]
• When the exposure mode is set to [Intelligent Auto], [Superior Auto] or [Scene
Selection], you cannot turn off noise reduction.
The camera reduces the noise that becomes more noticeable when the
camera sensitivity is high. A message may be displayed during processing
and you cannot record images during this time.
Normally, set it to [Normal]. Select [High] to reduce the noise. Select
[Low] to prioritize the timing of shooting.
MENU button t 2 t [High ISO NR] t Select the desired
setting
Notes
• When the exposure mode is set to [Intelligent Auto], [Superior Auto], [Sweep
Panorama], or [Scene Selection], this item cannot be set.
• Noise reduction is not performed on RAW images.
Long Exposure NR
High ISO NR