:: Photography Homework :: Depth of Field ::

Each week in my photography class we are set a homework assignment so we can put into practise what we have been talking about. One of the most valuable things for me in this class will be the journal I can put together at the end of all these assignments! I thought I would also share them here with you- you might know this all already, you might not care, but you might find it helpful! (Also good reference for me to look back on.)

This week was Depth of Field

All photos were taken at 400 ISO. The numbers in brackets are the settings I used. Click on the photo to get taken to a larger version where the differences should be more apparent.

Part 1.
To illustrate the role of Aperture in DOF.
Set the lens at 80mm (35mm equivalent) and fill about 2/3 of the frame with the subject.

a) Maximum Aperture (f4.0 and 1/80s)

b) Mid Aperture (f11 and 1/10s)

c) Maximum Aperture (f22 and 1/2s)

Part 2.
To illustrate show how moving closer or farther away from the subject changes DOF.
With the lens at 80mm (35mm equivalent) set the aperture at f8.

a) Roughly fill the frame with the subject.

b) Half fill frame with subject

c) Eighth fill frame with subject.

Part 3.
To illustrate the role of focal length in DOF, and also the flatteneing effect of longer focal lengths.
Set aperture at f8 and frame the subject so it occupies approx 2/3 of the frame for each focal length.

a) Shortest Focal Length (28mm)

b) Mid Focal Length (84mm)

c) Longest Focal Length (300mm)