Manual Camera Mode and the Sunny 16 Rule
Hey, this is Scott of PhotographyBanzai.com
Today I’m talking about settings again. This time I’m going to talk about full
manual mode. Every digital SLR will have a dedicated manual mode where you
control the shutter speed, aperture, and the ISO. The full control in this case
this is a K-5. I can control aperture with the rear dial, and then the shutter speed
with the front dial. If I hold the ISO button down, I can control that with the
rear dial. So you can see this changes as I change the settings on the camera.
That’s.. the cameras built-in meter showing if the photo is underexposed or
overexposed. So you can see it’s underexposed. Now if I increase the
aperture to maximum, and then I decrease the shutter speed.. see it’s going all the
way to equalization. So now the camera says that I have a pretty good overall
exposure. So I can take a photo and it should turn out pretty nicely. You can
see the meter here, but you can also of course see it inside the viewfinder.
There is a rule it’s called a sunny 16 rule. It’s best used.. it can be used in any
conditions, but it’s called the sunny 16 rule because it implies that outside in
the normal daylight if you use F/16 as your aperture, so let’s do that. So you
use F/16 as your aperture outside then you use the reciprocal of your ISO as
your shutter speed. So if I were using 800 ISO, I would use 1/800th approximately of a second shutter speed. Realistically if
you’re in the daylight you’d use a low ISO. And then either 1/100th or 1/125th of
a second shutter speed. Now that should give you, in daylight, a pretty reasonable
exposure. Now, in other conditions… What you would do you would leave that
reciprocal, but then you would change your ISO value to compensate for the
conditions. If it’s not bright outside.. it’s kind of overcast.. you take your
aperture and widen it. And then if you’re in shade, you would continue to do that.
So in a shady situation you might use F/4 instead of F/16 it’s pretty nice little
rule to consider with manual mode.