Canon EOS-1D Manual De Instruções

Página de 176
49
Settings for Images
2
Setting the ISO Speed
The ISO speed is a numeric indication of the sensitivity to light. (
→p.154)
A higher ISO speed number indicates a higher sensitivity to light. Therefore, a high ISO speed
is suited for moving subjects or taking pictures in low-light conditions. However, the image will
contain more noise to make it look coarse or grainy. On the other hand, a low ISO speed will
make the image look finer, but it is not suited for freezing motion or shooting in low light.
The camera can be set to any of the following ISO speeds: ISO 200, 250, 320, 400, 500, 640,
800, 1000, 1250, or 1600. The ISO speed is initially set to 200.
Hold down the <
> and <
> but-
tons simultaneously.
s
The <
> icon and current ISO speed will be
displayed on the top LCD panel.
1
While still pressing the two buttons, turn
the <
> dial to select the desired ISO
speed displayed.
2
Let go of the buttons.
s
The new ISO speed will be set.
3
The higher the set ISO speed, the more noise will appear in the image. Also, image
file size will grow and you will be able to record fewer images on the CF card.
Therefore, setting a higher ISO speed will reduce the number of images that the CF
card can store. On the top LCD panel, you can check the number of images the CF
card can hold. (
→p.27)
With C.Fn-03-1, you can set sensitivity at ISO 100 or 3200. (
→p.133)
With C.Fn-08-1/2, you can display the ISO speed instead of the number of
remaining shots. (
→p.135)