Setting Iso; Multi Frame Noise Reduction - Sony SLT-A57 &alpha Handbook

Setting ISO

Sensitivity to light is expressed by the ISO number (recommended
exposure index). The larger the number, the higher the sensitivity.
1
Press the ISO button to display
the ISO screen.
2
Select the desired setting with v/V on the control button.
• The larger the number, the higher the noise level.
• If you want to select [Multi Frame Noise Reduct.], display the setup screen
with B, and select the desired value with v/V.
Notes
• When the exposure mode is set to Intelligent Auto, Superior Auto, Sweep Panorama,
3D Sweep Panorama, or Scene Selection, ISO is fixed to [AUTO] and you cannot
select other ISO numbers.
• When the exposure mode is set to P/A/S and ISO is set to [AUTO], ISO is
automatically set between ISO 100 and ISO 3200.
• The [AUTO] setting is not provided in exposure mode M. If you change the
exposure mode to M with the [AUTO] setting, it is switched to [100]. Set the ISO
according to your shooting conditions.

Multi frame noise reduction

The camera automatically shoots multiple images continuously, combines
the images, reduces the noise, and records 1 image. In multi frame noise
reduction, you can select larger ISO numbers than the maximum ISO
sensitivity.
The image recorded is 1 combined image.
Notes
• When [Quality] is set to [RAW] or [RAW & JPEG], this function cannot be used.
• The flash, D-Range optimizer, and [Auto HDR] cannot be used.
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ISO button