Canon IXUS55 User Manual page 54

The nature of CCD image sensors is such that noise in the
recorded image increases at long shutter speeds. This
camera, however, applies special processing to images shot
at shutter speeds slower than 1.3 seconds to eliminate the
noise, thereby producing high-quality images. A certain
amount of processing time, however, may be required before
the next image can be shot.
Use the LCD monitor to confirm that the image was
recorded at the desired brightness.
Please note that camera shake becomes a factor at low
shutter speeds. If the camera shake warning
on the LCD monitor, secure the camera to a tripod before
shooting.
Use of the flash may result in an over-exposed image. If
this occurs, shoot with the flash set to
The following are unavailable:
- Exposure Compensation
- Metering
- AE Lock
- FE Lock
- ISO speed: Auto
- Flash: Auto, Auto with Red-Eye Reduction
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