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Message: <blockquote data-quote="Horoscope Fish" data-source="post: 494852" data-attributes="member: 13090">When you enable Auto-ISO the camera meters just on the ambient light; the fact you've popped up the built-in flash, at this point, means nothing. If we assume the ambient light is somewhat dim, the camera meter adapts to this by using a little bit wider aperture, a slower shutter speed or a higher ISO depending on what shooting mode you're in. Since you're in "A"perture priority, the ISO is adjusted to compensate for your chosen aperture. Whatever the combination, however, both flash and camera communicate to achieve accurate exposure.For this reason, and others, I simply don't use Auto-ISO with flash. You can, but I don't really suggest it.....</blockquote>