What is chromatic aberration?
Chromatic aberration is a problem that occurs when the lens cannot focus all wavelengths of the color at the same point. It can occur with lenses in cameras, microscopes and optical devices such as telescope, and it can also be a problem for the human eye. When chromatic aberration occurs, objects may seem blurred and halos and color stripes may appear in the picture. There are two types of chromatic aberration for this problem: longitudinal and lateral, also known as transverse. When different lengths pass through the lens, they are refractive differently, causing blur, because the lens does not indicate a single focus. For example, the edge of the object may seem lined with color due to side chromatic aberrations and longitudinal chromatic aberrations can make it difficult to monitor objects and focus.
People have recognized this problem for hundreds of years. When people learned more about the nature of visible light, they began to take steps to reduce chromatic aberration, including the development of achromaticlenses that would correct the refractive errors to seal the focus. Such lenses can consist of several lenses in a set or a single lens, which is specially cut to solve problems with focusing color. In the eye, the eye structure is designed partly for correction of chromatic aberrations so that people can clearly see.
Chromatic aberration is a bugbear of many photographers. It can be a big problem with a wide angle lenses and can emerge near the edges of the image, even with high -quality lenses. Many photo editing programs are equipped with tools that can be used to repair chromatic aberration in post production, showing how common this problem is. One thing to realize is that the Wchromatic Hile aberration may not be easily obvious when the image is perceived in a small size, it can be very evident in largerI prints.
problems with registration and focus of color are not always caused by chromatic aberration. These may be other problems such as lenses, or even storage problems, whether it is a movie or a memory card.