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 GreenMountainGirl, Apr 4, 2013

It's fine if you want to use manual mode to learn exposure, but either use the meter or chimping as a way to check your estimate.  At the bottom middle of your viewfinder is a meter that should show +____0____- With vertical bars under these signs, if you see these bars, it means your camera will record a very dark (bars toward the -) or very bright (bars toward the +) image.  Sometimes that may be what you want (if the subject and background are very dark or light---think of a child in a light color out playing in snow) but most of the time you'll want that meter fairly close to the middle (blue sky, green grass, etc are all pretty close to 0 on the meter).   This is especially true if you use matrix/evaluative metering (as it's rare that a whole scene will be that bright or dark).

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