Zooming in closer on subjects (digital zoom), Locking image brightness / exposure (ae lock) – Canon PowerShot SX70 HS Digital Camera User Manual
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Exposure may not be as expected when the ISO speed is set to
[AUTO], because the ISO speed is adjusted to ensure standard
exposure relative to your specified shutter speed and aperture value.
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Image brightness may be affected by Auto Lighting Optimizer. To keep
the Auto Lighting Optimizer disabled in mode, add a [ ] mark
to [Disable during man expo] on the Auto Lighting Optimizer setting
screen.
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Calculation of standard exposure is based on the specified metering
method.
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To adjust exposure when ISO speed is set to [AUTO], select a level by
pressing the button on the exposure level indicator.
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With shutter speeds of 1.3 seconds or slower, ISO speed is [100] and
cannot be changed.
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Zooming In Closer on Subjects (Digital Zoom)
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Using the zoom lever or zoom button will show the current position on
the zoom bar. The zoom bar is color-coded to indicate the zoom range.
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White range: optical zoom range where the image will not appear
grainy.
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Yellow range: digital zoom range where the image is not noticeably
grainy (ZoomPlus).
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Blue range: digital zoom range where the image will appear grainy.
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No blue range is displayed under certain pixel count settings, and you
can zoom in to the maximum level in one zoom operation.
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To deactivate digital zoom, choose
[Digital zoom] → [Off].
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Locking Image Brightness / Exposure (AE Lock)
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AE: Auto Exposure
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