Does auto ISO pick up focal length on 5DMK3?

Started Mar 31, 2012 | Discussions thread
Scales USA
Veteran MemberPosts: 3,119
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Re: Does auto ISO pick up focal length on 5DMK3?
In reply to Bobby Bob, Apr 1, 2012

What are you really asking or getting at?

Auto ISO merely increases or decreases the ISO setting to keep the correct exposure for shutter speed / aperture settings.

If your camera was on automatic exposure, a long telephoto lens would cause the body to set a faster shutter speed, and this might lead to auto ISO increasing the ISO setting to keep a correct exposure.

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