Sony SLT-A99V - Manual (Page 150)

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Reducing the noise in an image
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 is to reduce the grainy noise typical in 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
• When the exposure mode is set to Sweep Panorama or Tele-zoom Continuous
Priority AE, or continuous shooting, continuous bracketing, [Sports Action] or
[Hand-held Twilight] in Scene Selection, or ISO is set to [Multi Frame Noise
Reduct.], noise reduction is not performed even when it is set to [On].
• When the exposure mode is set to Auto Mode or Scene Selection, you cannot turn
off noise reduction.
• Even when the shutter speed is set to 1 second or longer, noise reduction may not
work, depending on the shooting conditions.
The camera effectively reduces the noise that becomes more noticeable
especially when the ISO sensitivity is higher.
Normally, set it to [Normal]. You can also select [Low] or [Off].
MENU button t 2 t [High ISO NR] t Select the desired
setting
Notes
• When the exposure mode is set to Auto Mode, Sweep Panorama, or Scene Selection,
this item cannot be set.
• Noise reduction is not performed on RAW images.
Long Exposure NR
High ISO NR