Canon 814XL-S - Manual (Page 41)

fps. At this filming speed, the shutter speed is
about 1/40 sec. at a shutter opening angle of
150° or about 1/30 sec. at a shutter opening
angle of 220°. At 9 fps only silent filming is
possible even if a sound cartridge is loaded.
Simply turn the dial until it click-stops at the
speed you want.
Although any speed can be set, each speed has
its advantages and disadvantages. If the projec­
tion speed is constant, a filming speed of 24 fps
will have a slight slow-motion effect. It is con­
sidered to give slightly better quality to both pic­
ture and sound and is especially effective for
filming action, panning or for smoother long
shots of landscape. Its disadvantage is that the
film is used up faster.
If the projection speed is constant, a filming
speed of 9 fps will accelerate the subject's
movement. It is useful for comical effects and for
increasing the exposure time to permit filming
under very poor lighting conditions. At this
speed, you can film in half as much light as at the
normal speed of 18 fps. Its major disadvantages
are that it causes movement to be jerky and is
unsuitable for sound filming.
At the center of the filming speed dial is the slow
motion button. See also page 54.