Canon PowerShot A20 Software Starter Manual page 55

RAW Image Parameter Settings Dialog
Click this and a white point of the
image in the Preview Area to set it
as the value for the white balance.
Parameter setting selections are
reflected in the preview image.
Placing a check here applies
linear processing to the
contrast, sharpness and color
saturation, and allows the
images to be edited with
photo retouching software,
such as Adobe Photoshop.
• The [Linear] option is only
enabled when [TIFF 16 bits/
channel] is selected as the
file format.
• The image quality settings are restored to the default settings when the TWAIN Driver
is closed. The settings are also restored to the default settings when the connection
with the camera is broken off, if an image is recorded or deleted by the camera while
connected to the computer, or if the TWAIN Driver window is refreshed.
Selecting and Adjusting the Attributes of Multiple RAW Images
Ensure that all images included in a multiple selection of RAW images are from the
same camera before attempting to adjust the image attributes. The white balance
will not adjust properly if images from different cameras are mixed and the [Manual]
white balance option is selected in the RAW Image Parameter Settings dialog or if a
white portion of the image is selected in the preview area.
How to Change the File Transmission Format
1. Click the [Preferences] button in the TWAIN Driver window.
The Preferences dialog will display.
2. Change the transmission format in the [Send RAW image data to the
application] option and click [OK].
Transmitting in the TIFF 16 Bits / Channel Format
When [16 bits per color channel] (supported by the EOS D30 only) is selected as the
transmission option for RAW images, images can be transmitted to the application at 16
bits per RGB channel. Although colors are expressed more vividly with the 16-bit setting
than the 8-bit setting, the file size increases dramatically. Moreover, some image editing
applications function only partially with files of this format or cannot open them at all.
Displays the image in the
Preview Area at full size.
Preview Area
Resets the image quality
settings to the state in which
the image was shot.
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