CloudyCoastPhotography

Sure, his question could have been Googled, but so could 99% of the questions posted here. And by posting the question, rather than Googling on his own, he is presenting this concept to other photographers who otherwise may have not yet heard of sunny 16.
I love this forum, but there sure are a lot of db’s who reply with sarcasm and snarky replies. Kinda takes away from the forum. So my call to arms for everybody else who’s sick of the troll responses: from now on when somebody answers rudely, respond to them with “thanks for nothing, troll.”
I’m not calling anybody out specifically, this time, so no need for anybody in particular to get huffy with my response, unless the shoe fits.

CloudyCoastPhotography

Excellent explanation! Thank you!

CloudyCoastPhotography

Another intelligent answer! Thank you for a decent response! 👍🏼👍🏼👍🏼
I’m glad there are more decent folks than trolls in this forum.

cthahn

It means on a sunny date, ISO 100, f16, and 1/100 speed.

mborn Loc: Massachusetts

I remember

dpullum Loc: Tampa Florida

Clue... use search at the top of the page for any question you have... also use Google. Tons of info... so why ask in UHH and make others do your work for you? If you have problems finding some subject or if it were complex to you then understandable... but use Google, or Search at top of page ...

Using Search at top of page.... search sweet 16 and sweet sixteen this topic well covered.

billnikon Loc: Pennsylvania/Ohio/Florida/Maui/Oregon/Vermont

I means that on a sunny day you can bet from 10 AM to 2 PM your exposure should be 1/125 sec. at f16 at ISO 100.

The sunny 16 rule works like this:

On a clear and sunny day, at an aperture of F/16, you will get a correct exposure if you use a shutter speed that’s the inverse of the ISO speed you’re using.
The second part is probably the one that’s confusing you (if any of it is). You have to know what ISO speed is in order to decipher what’s going on. So allow me to explain.
The easiest way to explain is with an example. If it's a sunny day, and have your aperture set to F/16 and ISO set to 200, to correctly expose your image the shutter speed needs to be set to 1/200 (the inverse of the ISO number).

ISO speed is your camera’s sensitivity to light. A bigger ISO speed means a larger sensitivity. If your camera is more sensitive to light, it takes less light to make a picture more bright. Most cameras start out at an ISO speed of 100, and some models go as high as ISO 1600. That’s 16 times more sensitive than the default, meaning you’d need to expose the camera to 16 times less light in order to get the same picture. I talk more about ISO in ISO Explained.

Keep this in mind because you’ll notice a pattern. The rule says you need to use the inverse of the ISO speed. That’s interesting because as you increase your ISO speed, you effectively have to increase your shutter speed to compensate. At ISO 200, your camera is twice as sensitive to light, so you need to use a shutter speed of 1/200 of a second to let in less light and balance it out.

Let’s use another example. Let’s say it’s a sunny day, and your camera is set to ISO 400. According to the sunny 16 rule, if you use an aperture of F/16 and a shutter speed of 1/400 s, you will have an evenly balanced image that is neither too bright nor too dark.

That’s interesting, but it seems like the rule can only help us out when it’s sunny.

Tjohn Loc: Inverness, FL formerly Arivaca, AZ

Those numbers look a lot like an EV table.
Excellent description too.

markie1425 Loc: Bryn Mawr, PA

Did YOU think before you wrote your clueless comment?

The original poster asked a legitimate question because UHH is populated with incredibly knowledgeable members.

In fact, they offered the kind of help that he wanted---with the exception of your waste of space.

aellman Loc: Boston MA

Your image looks like the little paper exposure guide that used to be in every box of Kodak film. It was actually more accurate than some ancient light meters.

CHG_CANON Loc: the Windy City

Marky, let me show you how google works ...

A Waggoner was once driving a heavy load along a very muddy way. At last he came to a part of the road where the wheels sank half-way into the mire, and the more the horses pulled, the deeper sank the wheels. So the Waggoner threw down his whip, and knelt down and prayed to Hercules the Strong. “O Hercules, help me in this my hour of distress,” quoth he. But Hercules appeared to him, and said:

“Tut, man, don’t sprawl there. Get up and put your shoulder to the wheel.
“The gods help them that help themselves.”

You might recognize this as Aesop's work, one of your contemporaries?

lamontcranston

Well said.

Gerylee Loc: Ontario, Canada

When you don’t like a question, for whatever reason, why not just bypass it?
Your response is very unfriendly.

Gerylee Loc: Ontario, Canada

I thought this was a club to help other photographers. Lots of folks have given quite detailed answers, some more complicated than others.

You gave a detailed put down. Why did you do that?

Bill_de Loc: US

Ooops


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