1 stop over exposure = 1 stop lower iso

Started Nov 19, 2009 | Discussions thread
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Veteran MemberPosts: 4,248
The difference is highlight recovery
In reply to gl2k, Nov 23, 2009

As you say overexposing one stop makes the ISO look one stop lower, and vice versa. The difference is the headroom you have in highlights. When overexposing you always run a larger risk of getting blown highlights.

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