Canon EOS 350D Instruction Manual page 135

Image area to be printed
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Depending on the printer, the trimmed image area might not be printed
as you specified.
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The smaller you make the trimming frame, the grainier the picture will
look. If the picture will be too grainy, the trimming frame will turn red.
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While trimming the image, look at the camera's LCD monitor. If you look
at the image on a TV screen, the trimming frame might not be displayed
accurately.
The trimming frame shape will be different depending on the [Paper
settings], [Image] / [Paper], [Page layout] / [Borders] settings.
3
Exit the menu.
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Press <0>.
s
The Print setting screen will reappear.
s
On the upper left, you can see the
trimmed image area that will be
printed.
Setting the Trimming
135