Are there any "rules" for using ISO?

Started Apr 3, 2013 | Discussions thread
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Re: Are there any "rules" for using ISO?
In reply to Barrie Davis, Apr 5, 2013

Barrie Davis wrote:

As I already explained, you cannot change the AMOUNT of exposure required under a specific brightness of light and ISO sensitivity...

... by changing whether the MODE of exposure setting leaves you to deal with shutter OR aperture.

Just as it is always the same AMOUNT of miles to the your local supermarket whether your MODE of travel is by car or push-bike.

Does that make the principle any clearer?

Yes, it is clearer now.  I do appreciate the help and patience from you and others here.


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