Want to capture excellent photos? Then you need to understand three things — the aperture, the shutter speed, and the ISO.

The aperture controls light that passes through your camera lens. If you shoot with the aperture adjusted to the smallest opening, the smallest amount of light is allowed to enter. Let’s say, you need to take a picture in an environment that’s too bright — how do you fix that? Simple — just choose a smaller aperture. The aperture’s sizes are measured by f-stops. A higher f-stop means a smaller aperture hole while a lower f-stop means a bigger aperture opening.

Now, the shutter speed. It’s the duration of time a camera shutter is open to allow light into the camera sensor. Shutter speeds are usually measured in fractions of a second. Fast shutter speeds allow less light into the camera sensor and are used for high-light and daytime photography while slow shutter speeds allow more light into the camera sensor. Obviously, slow shutter speeds are ideal for nighttime photography.

Finally, the ISO. ISO is all about the sensitivity level of your camera to available light. Usually, it’s measured by numbers. A lower number represents lower sensitivity to light while higher numbers mean heightened sensitivity. The drawback in using increased sensitivity is that it produces noisier images. Simply put, you end up with grainy pictures if you use high ISO.

How do you take properly exposed photos, then? Those that are not too dark or too bright. The three – Shutter Speed, Aperture, and ISO – need to play together well. Let’s say it’s high noon. Of course, you have plenty of sunlight. If your camera aperture is very small you block most of the light. It means the camera sensor needs a longer time to gather light. Now, for the sensor to collect enough light, the shutter has to stay open longer. In other words, you need a slower shutter speed.

Look at the diagram featured here. From the top, the first level represents aperture sizes, the second level represents shutter speeds, and the third level represents levels of ISO.

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Following video will explain how to set correct Aperture, Shutter Speed, ISO, & Light Explained-Understanding Exposure & Camera Settings
by: Tony Northrup

This video explains what depth of field is, how it works, and how to control it. While some concepts are simplified a good deal, it should help you get a good understanding of depth of field. I will be doing later videos to further explain some of the more complex concepts in detail.
By: Dylan Bennett

At Kelaniya, about 10km to the northeast of Colombo, in Sri Lanka, lays Kelani Rajamaha Viharaya, one of the most revered historic Buddhist temples of the orient. Set on the summit of a small mound lapped by the waters of the river Kelani, this beautiful shrine presents one of the most panoramic views ever offered to the tourist by this small island of ours, the pearl of the Indian Ocean.

Among the many Buddhist temples of Sri Lanka, the Kelani Viharaya stands out as one of the most exquisite examples of the sculptor’s art. Its history runs back to more than 2500 years. In the days of yore, it always received full royal patronage, and to this day, it’s has been highly venerated by the people of the island. Its significance as a place of Buddhist worship is clearly evident in the island’s folklore. One such instance is the popular folk verse which when rendered into English would read as follow