Well, here we discuss about the basics of photography which includes the exposure triangle, shutter speed, aperture, ISO etc. By the end of this tutorial you would be able to take better pictures by understanding these basics of photography.

Exposure triangle

The exposure of a picture depends mainly on three factors: shutter speed, aperture, ISO. These three factors together constitute the exposure triangle. Setting  shutter speed , aperture & ISO to the  perfect value helps in getting the perfect exposure for a picture. When we make change to either any one of these factor proper variation should also be made to other two also to make exposure perfect.

Shutter speed

It indicates the how much time the sensor would be kept open while taking a picture. It is usually indicated by 1/4000, 1/500, 30 sec etc. 1/4000 means that the sensor would be exposed to light for only 1/4000 of a second.
For taking pictures of fast-moving objects we should use a high shutter speed like 1/500. For capturing motion blur a shutter speed between 1/50 & 1/100 is ideal. For capturing photos of night sky, a shutter speed about 30 sec is used.


Aperture indicates the degree or amount of opening of the sensor to the light. A wider aperture like f 1.4 allows more light to pass through and provides more background blur when compared to a small aperture like f 11.0.

While capturing landscapes a small aperture like f 14.0 is preferred since it provides more detailing to the picture and retains the color of the sky. While shooting portraits people prefer lenses with widest aperture since it provides more background blur & helps the subject to standout.


ISO sensitivity is a measure of camera’s ability to capture light. It is a camera’s setting which helps in keeping an image brighter or darker. When we increase ISO the image becomes brighter and as a result the grains within the picture also increases. usually a lower ISO is preferred for better detailing of the picture. For portraits an ISO below 400 is preferred.


No comments:

Post a Comment