as low as you feel it can go and still freeze the sub-
ject, you have to adjust the ISO and the aperture.
To capture the scene in Figure 5-3, wedding pho-
tographer Kenny Kim used a shutter speed of 1/80
of second, which froze the action, but in doing so
he then needed to use a high ISO of 3200 and a
wide aperture of f/2.8 because the light in the
church was quite low.The key to getting good wedding images, espe-
cially during the ceremony, is to make sure that
you are using a shutter speed that is fast enough
to freeze the action so there is no blur. The good
news is that the subjects during a wedding cere-
mony don’t really move very much. This means
that you can use slightly slower shutter speeds
and still get sharp images. Because you have lim-
its on what shutter speeds freeze the action, you
have to adjust the aperture and ISO to get a
proper exposure. That is to say that you can’t
drop the shutter speed so low that the subject’s
movement causes blur or the camera movement
causes blur. Once you have set the shutter speed
ABOUT THIS PHOTO For this photograph I used a relatively slow shutter speed of 1/60 second, which allowed me to freeze the action
because the bride and groom were stationary. I still needed a rather high ISO of 1600 and a wide aperture of f/2.8. Taken at 1/60 second, f/2.8,
and ISO 1600.
It is better to raise the ISO so that
you can use a shutter speed fast
enough to freeze the action (and deal with the digital
noise later) than to get blurry shots with low noise.tip5-2