Canon 500D Camera Lens User Manual


 
60
Set the ISO speed (image sensor’s sensitivity to light) to suit the ambient light
level. In the Basic Zone modes, the ISO speed is set automatically (p.61).
1
Press the <Z> button. (9)
X [ISO speed] will appear.
2
Select the ISO speed.
Turn the <6> dial or press the
<U> key to select the ISO speed.
You can also set the ISO speed in the
viewfinder while turning the <
6
> dial.
With “AUTO” selected, the ISO speed
will be set automatically (p.61).
ISO Speed Guide
Z: Changing the ISO SpeedN
ISO Speed
Shooting Situation
(No flash)
Flash Range
100 - 200 Sunny outdoors
The higher the ISO speed,
the farther the flash range
will be (p.62).
400 - 800 Overcast skies, evening
1600 - 6400, H Dark indoors or night
Under the [7 Custom Functions (C.Fn)] menu, if [Highlight tone
priority] is set to [1: Enable], the settable ISO speed range will be ISO
200 - 3200 (p.186).
Using a high ISO speed or shooting in high-temperature conditions may
result in more grainy images. Long exposures can also cause irregular
colors in the image.
When you shoot at high ISO speeds, noise (horizontal banding, light
dots, etc.) may appear.
Under the [7 Custom Functions (C.Fn)] menu, if [ISO expansion] is set
to [1: On], ISO 6400 and “H” (ISO 12800) can also be set (p.184).