Setting The Iso Speed - Canon EOS-1DS Mark III Instruction Manual

JSO: Setting the JSO Speed
The ISO speed is a numeric indication of the sensitivity to light. A higher
ISO speed number indicates a higher sensitivity to light. Therefore, a
high ISO speed is suited for low light and moving subjects. However,
the image may look more coarse with noise, etc. On the other hand, a
low ISO speed is not suited for low light or action shots, but the image
will look finer.
The camera can be set between ISO 100 and 1600 in 1/3-stop
increments.
Press the <JSO> button. (66)
_y,, T he current ISO speed will be
displayed on the top LCD panel and
in the viewfinder.
Set the JSO speed.
@ Turn the < _:_iO > dial to set the ISO
speed.
® Using a high ISO speed or shooting in high-temperature conditions may
result in more grainy images.
Hign [empera[ures qigh ISO speeds, or long exposures may cause
irregular colors in the image
If C.Fn I1-3 [HLghHght tone priority] is se-[ to [t: EnabLe], the settaD_e
ISO speed range will be ISO 200 - 1600. (p.164)
With C.Fn 1-3 [Set JSO speed range], the JSO speed range can be
extended to ISO 50 (L) to 3200 (H) 1p.158)
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