Changing The Iso Speed - Canon EOS 550D Instruction Manual

IS0: Changing the [SO Speed*
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.63).
_ Press the <IS0> button. (66)
_y,, [ [SO speed] wi[[ appear.
[SO Speed Guide
2
Set the [SO speed.
_ Turn the <_> dial or press the
<@_ > key to select the [SO speed,
®_ You can also set the ISO speed in the
viewfinder while turning the <_ >
dial,
_ With "AUTO" selected, the iSO speed
will be set automatically (p.63).
!00 -400 Sunny outdoors The higher the ISO
400 - !600 Overcast skies or evening time speed, the farther the
1600 - 6400, H Dark indoors or night flash range will be (p.64).
_ In the [9-" Custom Functions (C°Fn}] menu if [Highlight tone priority]
is set to [1 : Enable], the gettable [SO speed range will be [SO 200 - 6400
_p,!94).
Using a high JSO speed or shooting m 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 (banding, dots of light, e_c.]
may appear.
E_ In the [_1":Custom Functions (C.Fn)] menu, if [[SO expansion] is set to [1:
On], "H" (equivalent to ISO 12800j can also be set Lp.192).
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