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Goodbye aberration: physicist solves 2,000-year-old optical problem

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When you look through your viewfinder and things seem a little bit blurry or lacking definition, it’s probably because you are using an “el cheapo” lens. So you read reviews and buy a much more expensive lens, and what do you do next?

You don’t go out to learn about composition and lighting to make better pictures. No. If you are a conscious and professional photographer, you start pixel-peeping to rationalize your expensive purchase.

And what do you find then?

The problem is still there. Right there, in the corners. They’re soft. The center is OK, but the corners are still soft. So you read more reviews and buy a better lens.

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How to use frequency separation to remove chromatic aberration and colour fringing

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Frequency separation is typically seen as a technique for retouching skin – albeit often quite badly these days. But that’s not its only use. Separating colour from detail offers a lot of other potential benefits for working on your images.

In this particular example, from travel & landscape photographer Michael Breitung, it’s chromatic aberration and colour fringing that get the frequency separation treatment.

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Researchers find a way to fix chromatic aberrations in all kinds of lenses

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As a photographer, I’m sure you’ve experienced a problem of chromatic aberration in some of your lenses. But thanks to the new solution developed at the Harvard School of Engineering and Applied Sciences (SEAS), this problem might soon be resolved.  The recently invented metacorrector will be able to remove chromatic aberration in all kinds of lenses: smartphones, DSLR or mirrorless camera lenses, but also microscopes.

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5 ways to get rid of chromatic aberration in Photoshop

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Chromatic aberration (CA) can be a pain, especially in high contrast situations. It’s also called colour fringing. It’s most common in inexpensive consumer lenses, but pro glass is not immune. Shooting at extreme wide or tiny apertures can introduce it quickly even with the best gear.

You can take care of most chromatic aberration within Lightroom or ACR. Sometimes, though, only Photoshop can do the job well. In his new video, Jimmy McIntyre’s going to show you five different ways of dealing with it.

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New Flat Lenses Technology Could Offer Smaller Lenses with Zero Chromatic Aberration

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A new technology dubbed “achromatic metasurface” from Harvard’s SEAS aims at making Chromatic Aberration (CA), a thing of the past. Moreover, they are planning to do it with a flat lens design.

A flat lens prototype was introduced back in 2012, but it could only work with one wavelength creating significant Chromatic Aberration

The lenses we know are curved, making the acting like a prism and breaking different wavelength in different angles, creating an effect called Chromatic Aberration. Most lens companies have technologies to overcome this problem by either including several glass elements in the glass or by using different types of glass (like ED glass for Nikon).

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