Controlling the three elements of exposure, namely Aperture, Shutter Speed and ISO can be very confusing at times. Mastering these key elements is the first step to mastering photography. To get the desired result, you really need to understand the exposure and balance out its elements.
To get a better and deep understanding, let’s start with the first element of the exposure triangle.
In our eyes, ‘iris’ controls the size of pupil, thus controlling the amount of light that reaches the retina. Similarly, if we talk in optical terminology, aperture controls the amount of light that enters the digital sensor of the camera. Aperture is a ring like structure that opens and closes depending upon the settings. Wider the aperture, the more light will reach the sensor and vice versa.
The aperture is usually determined by the f-stop numerical values which are 1.4, 1.8, 2.0, 2.8, 3.6, 4.0, 5.6 and many more. For adjusting the aperture, you vary the f-stop values. When you go towards the higher side of the value, you will notice that the aperture is narrower and on the lower side of the f-stop, the aperture becomes wider.
Apart from how to adjust the numerical value, one more important thing to note here is that, while you are adjusting one stop adjustment will either reduce the amount of light by half or double it. For greater depth of field in your image, keep the aperture narrower. This setting will allow more area to be in focus like in landscape photography. In case, you want to isolate your subject and focus only on the subject, then you should go with the wider aperture which means lower f-stop value giving you the lesser depth of field.
Keep practicing and experimenting with different exposure settings to produce better results.
Happy Clicking! 🙂
~ Sulekha Sonal