Canon 518 SV - Manual (Page 27)

Manual Aperture Control
The aperture can be manually controlled by pulling up the aperture
control ring and turning it counterclockwise. In manual operation,
any desired f/stop can be set by turning the ring whiie iooking at
the f/stop scale inside the viewfinder. Use this method when
shooting against the light or when you wish to stress high-key or
low-key effects.
■ Open one f/stop further when you shift the filming speed
dial from "18” to "SLOW MOTION”.
Fadings
Fadings are used to show the elapse of time or a change in scene,
for instance, when the scene on the stage changes at the end of
a theme.
You can perform fade-ins and fade-outs by turning the aperture
control ring. Use a tripod when you perform fadings.
1 Confirm the proper f/stop by aiming the camera at the subject
* and pulling the trigger slightly with the aperture control ring
set at "A”.
O While shooting, turn the aperture control ring gradually from
^ the fode-out positim to the proper f/stop position in the case
of fade-in, and from the proper f/stop position to the fade-out
positin in the case of fade-out.
■ Fadings can be performed smoothly and effectively by attaching
an ND (neutral density) filter over the lens and making a larger dif­
ference between the proper f/stop and the aperture being totally
closed. The use of an ND filter is especially recommended under
very bright conditions or under excessive light.
■ Fading times of 1-1.5 seconds for a fast changing scene, and
2-3 seconds for a slower changing scene are advisable.