DEPTH OF FIELD IN PHOTOGRAPHY
If you want to grow your photography to an advanced
level then you must understand Depth of Field.
Depth of field defines that how much area is blurred
before and after the subject in your image, Through Depth of field you can
compose the image and show your subject properly into the viewer’s eye.
There are two types of Depth of field.
a) Shallow depth of field.
In Shallow depth of field, only the main subject will be in focus, and the area before the subject and after the subject will be a blur. as shown below:
b) Deep depth of field
In deep Depth of field, a larger amount of image is in the focus, the line between the nearest and farthest elements that are reasonably sharp is long. as shown below:
You have to use deep depth of field when photographing
landscapes (daytime and at night), seascapes, cityscapes, and architecture.it
keeps more of the image sharp and clear. Whereas while shooting portraits you
need shallow depth of field to blur the background and show the main subject in
focus.
Depth of field has a direct
relation with the lens aperture. like if you set your aperture numerically low.
For example- f/1.8 f/2.8 f/3.5 you will get shallow depth of field whereas if
you set the aperture numerically high. For example- f/8 f/11 f/16 f/22 you will
get a deep Depth of field.