Aperture and Depth of Field
Everytimes we talk about photography and camera, the
words "Aperture and Depth of Field" will appear oftenly. In this article, i will
try to help you to understand about Aperture and Depth of Field , so you can easy to understand obviously as beginner photographer.
Understanding Aperture
The definition of Aperture is the measure how wide of lens when it's opening ( lens Aperture) when we are taking the picture.
When we are pressing the shutter button, the hole in front of
camera censor will open, the aperture setting that decide how wide of this hole will open. More wide the hole , more lights that will come and written by the camera censor.
The Aperture can be called as f-stop unit. Oftenly we read the
term as Aperture 5.6. In Photography terms, it's more official called by term "f/5.6".
Like explanation above , the main function of aperture is as contoller of how much
much the wide of hole in fornt of censor that was opened. More small the number
of f-stop , more wide this hole will open ( and more lights volume that will come) and its reverse, more high of f-stop numbers more small the number will open.
In reality, the aperture setting in f2.8 it means that the aperture more high than f/22 , for example ( you will find the term “fully
open” oftenly, if you hear photographer talks). More Wide the aperture, it means that the number of “f” is smaller and smaller. More small the Aperture, it means that the number of “f” is higher and higher.
Understanding The Depth of Field
Depth of field-DOF, is the size of how far the focus area
in the picture. The wide Depht of fields (DOF) , it means taht most of the parts in photo
objects ( from nearest to farthest object in the camera frame) will looks sharp
dan focus. Meanwhile the shallow DOF, it means that only parts of object on only certain
points will sharp meanwhile the rest will blurred/unfocused.
To get wider DOF , set the aperture in small number,
example f-22 ( more small aperture, more
large the focus area)- look at example picture above. Meanwhile to get shallow DOF,
use aperture as large as possible , example f/2.8- loo at example picture
bellow.
Concept of this Depth of field will useful especially
in portrait photography dan macro photography, but in fact all specializations will need that concept.
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