The Exposure Triangle And Its Meaning In Quality Digital Art

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The exposure triangle explains the relationship between the three basic aspects of exposure. From each corner of the triangle, we could see different variables including the aperture, shutter speed, and ISO.

If we adjust one of these variables, it will influence the quality which could make the photo look brighter or darker and it could change the appearance too.

For example, when you use longer shutter speed, your photo will become brighter but it will add the motion blur to the picture.

Understanding Exposure: How to Shoot Great Photographs with a Film or Digital Camera is a wonderful book written by Bryan Peterson. This book costs around $25.95 for its paperback version and it’s recommended to anyone who is willing to experiment with manual settings.

He introduced the exposure triangle for the first time and you should try and consider them. The ISO is the measure of the sensor’s sensitivity to the various intensities of light. The shutter speed is the exact amount of time that is required for the shutter to open.

The aperture is about the size of the opening in the lens when you take a picture with the camera. All of them are always are causing impact to the others, so you must consider all of them at all time.

Understanding the exposure triangle might be a little bit difficult. Imagine you are standing in the room, wearing fancy sunglasses while the window is like the shutter of your camera. The size of the window could be considered as the aperture while the shutter speed is the time you need to close or open the window.

So if you need much time to close the window, then more light will come through the window. While wearing the sunglasses, your eyes will become less sensible to the light. This is quite similar with having a low ISO with your camera.

In controlling the amount of light that passes through the window, you could set the shutter speed. The longer shutter speed takes, the brighter your picture will be. If you want the opposite way, you could also take off your sunglasses and that means you should make the ISO become larger.

Mastering the exposure triangle requires a lot of practice; therefore you must remain calm and patient. But in the end, you will be able to produce quality digital art capturing the true perfection of a scenery that conquered you and made you think it deserves a picture.

Photo Credit: gbrummett

Posted in: Performance Metrics

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