Vkclicks: What is aperture ?

Wednesday, 21 May 2014

What is aperture ?

ISO, Aperture and Shutter speed are the important setting of your DSLR camera, in previous article we have understood the “ what does ISO means " now in this article we will learn what is aperture in simple terms.

What is Aperture ?

Aperture is the opening of your lens and from that light hit the camera sensor

The larger the hole more light hit on camera sensor, the smaller the hole less light hit on the camera sensor.

In simple words by adjusting this setting you can blur the background and brings main subject in focus.

You can control your camera’s this setting, by switching your camera mode to aperture priority mode. In this mode, you can control your camera’s aperture manually.

                         See the Image - here i have used aperture f/2.8 to blur the background of butterfly.

Aperture is measured in F-stops.
Lower F-stop (e.g. f/2.8), means the wider the opening of the aperture. Higher F-stop means (e.g. f/22), the smaller the opening of the aperture.

I know its creating confusion for the beginner, for them it seems wrong when they first hear it.

Because we are used to having larger numbers represent larger values but this thing is not applicable to aperture, f/2 is larger than f/11

Aperture setting has impact on your image but most probably these setting will impact on “Depth Of Field” of your image.

Depth of Filed means, subject of your shot will be in focus and sharp and the background will be blurry. In Large f-number image, main object and background will be in focus and in small f-number image, main object will be in focus and background will be blurry.

For Example – the one on the left is taken at f/1.8 and the one of the right at f/10.
you can see background is more blur in left image as compare to right one and DSLR lens cap is more visible in right image where aperture setting is f/10.

                 [ Click on image to zoom ]



Most of the photographer’s use the this setting to focus on the main object and rest of the image will be out of focus to get the viewer’s attention on the main subject. This technique is mostly used in portrait photography and macro photography.

Hope this article helpful to you to understand the basics of DSLR.

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  1. Deepa Deshmukh11 June 2015 at 22:00

    God bless u for ur Photography career,"The Photography"

  2. Great photos really from bottom of the heart..

  3. Thank u Deepa :) I m glad u like it