Are there any "rules" for using ISO?

Started Apr 3, 2013 | Discussions thread
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nelsonal Senior Member • Posts: 2,464
Re: Are there any "rules" for using ISO?

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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