Canon PIXMA MP950 User Manual page 68

(2) Mount the slides in the film guide with the front side (the side showing the correct image)
face down and with the image upside down. Load the slides in the landscape orientation,
making sure they are not loose in the film guide.
Important
Note
66 Photo Printing from Photo or Film
The images may be unsatisfactory if the film is set beyond the reference
position (A) indicated by the white line. Do not set the film beyond the
reference position.
Film is scanned in the order from left to right.
Mount the film in the film guide with the upper edge of the photograph
towards you to prevent the scanned photographs from being displayed
upside down on the LCD. Depending on the model or brand of your
camera, the scanning order may differ from the frame order of the film.
35 mm film strip
(A)
Order to scan
35 mm slides
Chapter 4