Sony DSLR-A580L - Manual (Page 148)

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Changing the noise reduction setting
When you set the shutter speed to a 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 3 t [Long Exposure NR] t [Off]
Notes
• When the exposure mode is set to Sweep Shooting, or continuous shooting,
continuous bracketing, [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 or Scene Selection, you cannot turn off
noise reduction.
The camera reduces the noise that becomes more noticeable when the
camera sensitivity is high.
Select [Auto] to prioritize the image quality. Select [Weak] to prioritize the
timing of shooting.
MENU button t 3 t [High ISO NR] t Select the desired
setting
Notes
• [Weak] is selected automatically for continuous shooting or continuous bracketing
images, even when you set it to [Auto].
• When the exposure mode is set to AUTO, Sweep Shooting, or Scene Selection, you
cannot select [Weak].
• Noise reduction is not performed on RAW images.
Disabling the noise reduction during long exposure
shootings
Setting the noise reduction at high ISO sensitivity settings