Unit 1 Task 2 APERTURE - Depth of Field

                                                                  APERTURE

    - Depth of field. Selective focus. Determinates how much of the image is in focus.

Aperture can be defined as the opening in a lens through which light passes to enter the camera. It is expressed in f-numbers like f/1.4, f/2, f/2.8 and so on to express the size of the lens opening.


                                                                     f4.0 1/13 ISO 100

                                                                   f22 2" ISO100



                                                                        f22 0"6 ISO400


                                                                  f4.0 1/60 ISO 400




                                                                  f22 1/6 ISO100

                                                                f4.0 1/50 ISO 100


                                                                     f4  1/50 ISO 100

                                                              f22 2"5  ISO 100

AC 2.1, 2.2, 3.2 
In this task, I have used a tripod so it would be easier to demonstrate the difference between large (f4.0) and small (f22) apertures. 
A large aperture results in a large amount of foreground and background blur. This yields a shallow depth of field (a shallow focus effect). 
This is often desirable for portraits, or general photos of objects where you want to isolate the subject. Sometimes you can frame your subject with foreground objects, which will also look blurred relative to the subject (for example foosball players image).
On the other hand, a small aperture results in a wide depth of field that can give you a sharp foreground and background - perfect for landscape photography.





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