Depth of FieldThis week photo I is working on and open assignment. Between technical and conceptual assignments students are given a break and allowed to shoot a roll of film of whatever subject they choose. This is called an open assignment and there are several throughout the year. We are beginning to discuss depth of field and how it is achieved using the aperture of the camera. Below are some examples of depth of field.
Important information to remember about Depth of Field:
- You must change your aperture. Just changing your focus is not the same thing.
- When you change your aperture you must also change your shutter speed to compensate. Remember that every action has an opposite and equal reaction. If you allow less light in by making your aperture smaller you must set your shutter time longer.
- A small aperture number on your camera (1.4, 2.8) means that your opening is larger and it is allowing a lot of light in through the lens. This gives you a narrow or shallow depth of field. And again the opposite is true. A larger number (11, 22) is a very small opening and allows very little light to enter the lens. This gives you a very wide or deep depth of field.
- For your assignment you need to take picture sets for every picture you take. See the example below. One should have a shallow depth of field and the other a deep depth.
This images was taken using a focal length of 51mm with an ISO setting of 100 and an exposure of 1/8 of a sec @ f 2.8
This images was taken using a focal length of 51mm with an ISO setting of 100 and an exposure of 8 sec @ f 22
Check out this video. It is very short and concise.
Photo AP
Still working on Breadth section of portfolio and compiling work for several competitions.
Have a great week.
Mr. F
Still working on Breadth section of portfolio and compiling work for several competitions.
Have a great week.
Mr. F
