I tested the Canon, it was fine in the centre, but if you wanted to print at the edge of the film it was blurred, the head seems to accelerate into the pass and doesn't register properly. OK in the horizontal but dire in the vertical.
If you run with the image centralised and not full width you might not see it.

[IMG]file:///C:/Users/Support/Desktop/CropMark.jpg[/IMG]
