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The sunny 16 rule

May 11, 2008, 05:59:07 PM

Okay, I'm probably overthinking this. But this is what confuses me... according to the sunny16 rule, on a sunny day you set your camera for f/16, and your shutter speed to the ISO of your film (or digital setting). So, if I had my ISO set at 800, I would have f/16 at 1/800th of a second, which lets in less light than if I had set it to 1/100th. That doesn't make sense to me.

Huh?

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Travis Minnig

Reply #1 - May 11, 2008, 06:01:32 PM

You are right. You need to let in less light because your film speed is so much more sensitive at 800 than at 100. Your exposure will happen much faster, so you will need a much faster shutter speed.

Travis

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wildmaven

Reply #2 - May 11, 2008, 06:20:01 PM

Quote from: Travis Minnig on May 11, 2008, 06:01:32 PM

I was overthinking it, ha ha!

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Comments and Harsh Critiques gladly accepted. My photos are ok to edit.

My photos and art: http://wildmaven.org

BobEdens

Reply #3 - May 11, 2008, 08:18:04 PM

a way I look at exposure, geek yes, can't help it, is to think of a glass and light as water. Aperture is the size of the hose, shutter is the amount of time the hose is open and ISO is the pressure.

gotta fill the glass but not over fill it.

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