Canon 814XL-S - Manual (Page 83)

If you want to include a few black frames before
the fade-in, hold the fade lever at C for some
time after filming has started. Be sure to hold
the fade lever fully at the C position, or the
shutter blades remain open and no fade-in
footage will be filmed. There is a fade-in safety
device that prevents filming until the shutter
blades are completely closed, if the lever is in the
C position and the shutter release lever is pressed
prematurely.
The time required for a complete fade is related
to filming speed aS follows.
FILMING SPEED FADING TIME
9, 18 fps Approximately 5 seconds
24 fps Approxirnately 3.7 seconds
SM Same as fppS/l 8 or 24 fps.
With the filming mode dial set at P, you can per­
form fades with the picture alone. The sound
level is maintained as it was during the shooting,
and the visual image fades in or out with the
same operations as described with the P.S. set­
ting.