Presentation made for MM126 about depth of field.

1. Understanding Depth of
Field
How It Affects Photos

2. Depth of field is the part of the image that
appears sharp
The transition from sharp to un-sharp is
gradual
Depth can be shallow
or deep
It is affected by:
◦ Aperture
◦ Distance from subject
◦ Focal length
What is Depth of Field?

3. When a photo has a shallow depth of
field, the portion of the picture that is in
focus is small
What is a Shallow Depth of Field?

4. When a photo has a deep depth of field,
the portion of the picture that is in focus is
large
What is a Deep Depth of Field?

5. Aperture is a hole within a lens that
controls the amount of light that is let in
Aperture is measured in f-stops
A large opening results in shallow depth
A small opening results in deep depth
What is Aperture?

6. A large opening results in a sharp
foreground and a blurry background or a
shallow depth of field
A small opening results in a deeper depth
of field
Shallow Deep
How Does Aperture Affect Depth?

7. The Distance between you and your
subject is important in determining depth
of field
The closer you are to your subject, the
shallower the depth of field
How Does Distance Affect Depth?

8. Focal length is an expression of the
magnification power of a lens and is
usually measured in millimetres
In other words,
it determines
how far a lens
can zoom in or
out
What is Focal Length?

9. The smaller the focal length the greater
the depth of field
A smaller focal length creates a wider
angle of view, which results in a deeper
depth of field
How Does Focal Length Affect Depth?

10. Depth of field can be used creatively in
photos to get interesting and beautiful
results
It is affected by three things:
◦ Aperture
◦ Distance from the subject
◦ Focal length
Experiment with depth of field in your
photos to get new, beautiful results!
Conclusion: Depth of Field