Canon CXDI-1 Operation Manual page 36

2. Taking an Image
Trimming images
When a printer is enabled in the printer setup (→ Setup Guide) but [OFF] is selected
for that printer at the IMAGE DESTINATION window, the green film size frame will
be displayed in the preview image screen and the image will be trimmed to that film
size during output.
If you wish to output the entire irradiation field, settings must be changed by the
service engineer.
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