Have you ever snapped a photo, been incredibly happy with the composition of it, the lighting! But suddenly you become overrun with dread to see red and blue color fringing around your subject? This, my friend, is chromatic aberration. In this article, we’ll take a look at the chromatic aberration definition as well as what causes chromatic aberration and how it can be avoided.
WHAT IS CHROMATIC ABERRATION IN CAMERAS?
First, let’s define chromatic aberration
There are two different types of chromatic aberration and simple ways to avoid both. But before we get into that, let’s get a solid understanding of the chromatic aberration definition.
CHROMATIC ABERRATION DEFINITION
What is chromatic aberration?
Chromatic aberration, often called “color fringing,” is a common optical color distortion that results in stray color along the outline of objects within a photograph. This aberration effect occurs due to a lens’ inability to focus the various wavelengths of white light onto the same focal plane. Because different wavelengths of light travel at different speeds, different colors can stray from a singular focal plane resulting in this chromatic aberration effect. Different colors appear depending on the type of aberration that occurs.
Ways to avoid chromatic aberration:
- Use a high-quality lens
- Avoid wide-angle lenses
- Shoot at a narrower aperture
WHY DOES IT HAPPEN?
What causes chromatic aberration?
To understand how to avoid this effect, it’s first important to understand how and why it occurs. What is chromatic aberration caused by? First, we need to review the properties of light and how it travels.
White light contains all wavelengths of color. However, various wavelengths (and various colors) travel at different speeds.
The speed differences of these different wavelengths change how each passes through a lens’ elements. The refractive index of the glass within a lens can cause these wavelengths to land on different focal points as they pass through.
Here’s an explanation courtesy of Pixel Prophecy.