Aperture Priority - Canon A-1 Instructions Manual

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Shutter Priority vs. Aperture Priority
Having now read how to control the camera
for shutter priority and aperture priority
AE photography, you might well wonder
when it is best to use which mode. Basically,
it depends upon what you want your photo-
graph to portray.
Shutter speeds are most effectively used to
freeze or emphasize movement. The shutter
priority AE mode is applicable to most
photographic situations.
Aperture priority is most applicable to still
photography such as portraiture and land-
scape photography in which depth of field is
an important factor. Some of the best crea-
tive commercial and architectural photo-
graphs are taken in the aperture priority AE
mode. This, however, does not apply to such
fields of photography as close-ups and
photomicrography for which you should
refer to the section entitled STOPPED-
DOWN AE.
Selecting a Shutter Speed
The table below can be used as a general
guide in selecting an appropriate shutter
speed according to lighting conditions when
using a standard 50mm lens and 100 ASA
film.
Brightness
Indoors
Outdoors
Mid-summer Beach or
Snow-covered Mountains
–40–
Shutter Speed
(Seconds)
1/30 to 1/60
1/125 to 1/250
1/500 to 1/1000