Canon MARK IV User Manual (en)

Printing Images
Printing (p.190)
You can connect the camera directly to a printer and print 
out the images in the card. The camera is compatible with 
“wPictBridge” which is the standard for direct printing.
Digital Print Order Format (DPOF) (p.199)
DPOF (Digital Print Order Format) enables you to print 
images recorded in the card according to your printing 
instructions such as the image selection, quantity to print, 
etc. You can print multiple images in one batch or give the 
print order to a photofinisher.