Corelation between ISO and Shutter Speed ?

Started Feb 6, 2013 | Discussions thread
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Silver Herenaillor
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Corelation between ISO and Shutter Speed ?
Feb 6, 2013

Of what i heard every ISO stops divide the shutter speed by two. Little example :
For a correct exposure of the same subject,
At ISO 100 SS is 1/8,
At 200 Ss is 1/15
At 400, 1/30,
800, 1/60,
Etc...
Is that accurate ?

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