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146
ISO Speed Settings
ISO Speed Guide
z
Low ISO speeds reduce image noise but may increase the risk of
camera/subject shake or reduce the area in focus (shallower depth of
eld), in some shooting conditions.
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High ISO speeds enable low-light shooting, a larger area in focus (deeper
depth of eld), and longer ash range but may increase image noise.
z
Image noise (such as dots of light or banding) may increase and apparent
resolution may decrease at H (equivalent to ISO 51200), because this is an
expanded ISO speed.
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If [
z
: Highlight tone priority] is set to [Enable] or [Enhanced] (
=
152),
ISO 100/125/160 and H (equivalent to ISO 51200) cannot be selected.
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When shooting with a high ISO speed, high temperature, or long exposure,
image noise (rough grain, dots of light, banding, etc.), irregular colors, or color
shift may become noticeable.
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When shooting in conditions that produce an extreme amount of noise, such as
a combination of high ISO speed, high temperature, and long exposure, images
may not be recorded properly.
z
If you use a high ISO speed and ash to shoot a close subject, overexposure
may result.
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