Chromatic aberration is a fact of life when it comes to photography. The combination of high-quality portable lenses, and in particular user skill, can minimize the visual purple edge. But what if a simple lens layer can remove CA? Enter a team of researchers from the Harvard Graduate School of Engineering and Applied Sciences (SEAS) who have done just that.
Named "metacorector", the coating is made up of "one-layer surface of nanostructures," according to a press release from SEAS.
Structures can be seen in the picture below.
Structures or "nanopilars" change the speed at which the light reaches the focal point, reducing or eliminating chromatic aberration:
"You can imagine the light as different packages are delivered at different speeds, as propagated in nanopilars. We designed nanopilars so that all these packages arrive at the focal point simultaneously and at the same time-width," Wei Ting Chen, research associate for Applied Physics of the SEAS and the first author of the paper.
Here's another picture that shows photos taken without (left) and (right) metacore. As you can see, the difference is considerable.
I know that we are all here to overcome the prospect of photographers, but technology has many applications – for example, high-resolution microscopes, where clarity is the most important.
And while Harvard "explores" [commercialisation] opportunities ", I think it will be a while before filtering up to us.
How to Quickly Repair Chromatic Aberration in Photoshop
Chromatic aberration is an unwanted color disorder that you sometimes notice on the edges of your photos. This happens because the colors of the light have different wavelengths, which means that the lenses on your camera reflect slightly differently. Here's a quick remedy for Photoshop compensation.