Manual control of aperture, Close-up lenses – Canon DS-8 User Manual
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Manual Control of Aperture
Manual aperture control is used when shooting against the light or
when you wish to stress high-key or low-key effects. Zooming and
focusing are performed in the same manner as in Electric Eye
operation.
1
Set the master switch at "MANU". The letter "M" will appear
* in the upper part of the viewfinder.
O Turn the aperture control ring and set the exposure indicator
^ of the viewfinder to the desired f/stop.
■ The aperture control ring moves only when the master switch is
set at “MANU".
Close-Up Lenses
58mm Close-Up Lenses 450 and 240 are used when titling, copying
documents and when photographing plants and insects. 450 and
240 indicate the distance in millimeter from the tip of the lens to
the subject when the distance scale of the close-up lenses are set
at infinity.
■ When using a close-up lens the depth-of-field becomes shallow.
Therefore, close the aperture down to smaller than f/8.
■ Do not use a close-up lens at high magnification (telephoto),
unless for special effects, because the depth-of-field becomes shal
lower.
■ When the focal length is set at 60mm, you can obtain the same
effect as that of attaching a close-up lens at a shooting distance of
1.2m (4 ft).