Canon BJC-S830D Application Manual page 87

6
Select the size of the photos.
Check the Automatic Clipping check box to automatically crop images so that
they fit the paper of the specified size.
Select the size of photos from the Photo Size pulldown menu. The Preview area
on the right side of the window shows how the selected images are arranged under
the current settings.
The figure below illustrates how the images are placed on A4 paper for each photo
size.
Select the Custom option when printing non-standard photos. In this case, you
have to specify the height and width of the photo.
Fixed Photo Size Printing 87