Relating
exposure reading to the aperture and the shutter speed
Because
the difference between each of the shutter and aperture settings
is ONE STOP, there are a range of options with most cameras
that will produce the same exposure, and the table below demonstrates
this.
| Aperture |
f4.5 |
f5.6 |
f8 |
f11 |
f16 |
f22 |
f32 |
f45 |
f64 |
f128 |
| Shutter |
1/1000 |
1/500 |
1/250 |
1/125 |
1/60 |
1/30 |
1/15 |
1/8 |
1/4 |
1/2 |
While
the exposure of the film might be the same with a variety
of settings, the image might look quite different and exactly
which settings are used is a creative decision the photographer
has to make.
While
an exposure of f4.5 @ 1/1000 of a second could stop
a fast moving subject, there might be little depth
of field. |
|
Where
as an exposure of 1/4 of a second @ f64 would
give great depth of field but might blur the subject.
In
both cases this might be exactly what the photographer
is after.
|
|
