7d: Pop-up flash master/slave works...check

Started Oct 1, 2009 | Discussions thread
SteveDude Senior Member • Posts: 2,485
The significance of the trigger-flash light will be iso-dependent

Since the trigger flash is fixed output, you should be able to see a ton more effect shooting a flash shot at higher isos than lower isos. Just like ambient light mixes in much more at iso3200 than iso100.

It might be interesting to have you shoot a trigger-only shot at a few different ISOs (maybe even an extreme like 6400) to see how much it lights up the subject.

Steve

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