Although an aperture is a hole, when we start photography, we don’t know our apertures from a hole in the ground.
But it’s essential to learn all about it so we can use it effectively.
And remember, aperture is also called F-stop.
Apertures are confusing because of the numbers related to them and the size of the holes.
It’s kind of like Alice in Wonderland: smaller is bigger, and bigger is smaller.
And it’s probably a good idea to stop calling an aperture a hole; we want to describe it accurately so we can make the camera
operation, composition, and light connection.
Aperture is an opening in our lens that we can make bigger or smaller.
Aperture adds to a composition's creativity because, beyond tonality, it controls the depth of field (DOF).
Our depth of field controls apparent sharpness in front of and behind the distance we focus on.
We’re probably aware of the effects of depth of field; we just might not have known what it’s called or how it happens.
Often, we use a shallow depth of field in portraiture, where the person is sharply focused, but what’s behind them is unsharp.
On the other hand, many landscapes have a deep depth of field, that’s when what’s in front of and behind the distance focus appears to be sharp.
But let’s be clear, we’re talking about apparent sharpness.
We could only focus on one distance at a time, so to say that everything in our picture is focused from front to
back is not true (This is a good time to mention that the distance we focus on also influences our DOF).
What we’re seeing is the effect of a deep field.
If we're working in an automatic exposure mode, we don’t get to pick an aperture or any other creative control.
However, we could work in the priority exposure modes and aperture priority to begin studying and practicing with aperture.
If we’re already working in manual exposure mode, we could pick our aperture, meter light intensity, and use our shutter speed and ISO to get the tonality we prefer.
In a
way, this is like working in aperture priority, except we’re working in manual exposure mode and intentionally making the aperture our priority because we want to control depth of field.
If we haven’t been studying and practicing
intentionally with aperture, it’d be a good idea to start because it’ll get us familiar with one of the primary creative controls we’ve got.
That’s one of the things the Introduction to Photography class will get ya doin’.
The Introduction To Photography
classes are starting soon.
If the schedules don’t work for you, we could arrange a series of private lessonscovering the same material.