![]() With a RAW image, you can manage highlights just as quickly as you can manage details within the shadows. As a result, these rich files are far easier to edit with post-processing software such as Lightroom and Photoshop. RAW images are much larger files as they contain almost 100% of the data from the sensor. JPEG images contain a smaller amount of image data and as a result are less malleable when it comes to editing them later. Most cameras now can shoot in both JPEG and RAW format. On top of this, there are some steps you can take to better control chromatic aberrations should they arise – plus, there are ways to avoid it where possible. Since not all problems with lens chromatic aberrations can be solved, the folk that develop cameras take steps to enable the camera to manage it. Unfortunately, a lot of lenses contribute to chromatic aberration appearing in your images. Some are successful, and others are not – or they don’t invest heavily in resolving this issue. The brains-teams that work in camera and lens development are constantly working to manage and prevent these known distortions. While there are ways to minimise longitudinal aberration, preventing lateral or transverse chromatic aberration is not possible in-camera.Īs I’ve stated, the quality of the lens is not always an indication that it won’t suffer from one, the other, or both forms of chromatic aberration. The fringing is more likely to have a blue or purple hue and will usually show up when using a wide-angle lens. ![]() In this case, the aberration will mostly appear at the edges and not in the centre. As a result, the light strikes the focal plane or sensor at different angles. The light moves through the lens differently to when Longitudinal Chromatic Aberrations occurs. It occurs as a result of light and colour wavelengths approaching the lens at an angle. The other common form of this distortion is Lateral Chromatic Aberration or transverse chromatic aberration as it’s sometimes known. Lateral Chromatic Aberration (aka Transverse Chromatic Aberration) It doesn’t necessarily mean that you have a sub-standard lens: this kind of aberration can exist in even the most expensive lenses available. Longitudinal chromatic aberration is more common in prime lenses with a wide aperture. Your subjects, especially those in contrasting light, will have a telltale fringe or ghost around them usually containing red, purple, blue and green hues. Plus, this kind of aberration can impact any part of your photo. In extreme cases, it can even look like an old-school camera glitch. It’s the most common form of chromatic aberration and occurs as the different colour wavelengths fail to meet at the same point on the sensor.Īs we touched on earlier, the resulting images will appear with a level of colour fringing around your subjects. It occurs mostly as a result of light coming straight at the lens and sensor. Longitudinal Chromatic Aberration (aka Axial Chromatic Aberration)įor reference, Longitudinal Chromatic Aberration is often referred to as LoCA and bokeh fringing. What Are the Different Types of Chromatic Aberration? These stray wavelengths are what cause the appearance of fringing. While most of the light will meet at a single point, stray wavelengths miss it by a mere fraction. That’s pretty clever when you consider that a zoom lens is continuously realigning those glass elements.Īnd those glass elements are not just there to deal with chromatic aberration – they serve a whole range of purposes to deliver crisp images without distortion.Ĭhromatic aberration occurs when the lens design, or defects in the glass, cause the colour wavelengths to not meet at the same point on the sensor. The job of the lens is to control and direct the split light to hit the camera’s centre in unison so that the camera can read the colour and light correctly.īut you also need to keep in mind that in most lenses, the light is passing through several glass elements with each impacting how the wavelengths travel.Ĭamera lens designers and engineers go to extreme effort to ensure that each wavelength hits the sensor correctly. When it hits the lens, the colours or wavelengths are split and then travel at slightly different angles. The term colour dispersion comes from when the lens disperses the light incorrectly.Īs light hits a lens and then passes through, it’s a lot like a glass prism. Light travels in colour wavelengths and, in an ideal world, each of those wavelengths should hit the sensor, or focal plane, at the same time. Let’s go into more detail on why chromatic aberration occurs to better understand how to manage it.Ī typical lens allows light to travel from the front element to the sensor.
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