Thursday , June 8 2023

Harvard engineers invent "Metacorrector" for camera lens, fixing one of the biggest nuisances of photography


Color Aberration is just a fact of life when it comes to photography. A combination of high quality lenses in particular – and the ability of users can minimize the purple edge. But if a simple layer on the lens could only remove CA? Enter a team of researchers from Harvard School of Engineering and Applied Sciences (SEAS) who have done exactly that.

Called a "metacorrector," the coating is composed of a single layer nanostructured surface, according to a SEAS press release.

Structures can be seen in the picture below.

Structures or "nanoparila" modify the speed at which light touches the focal point, reducing or eliminating chromatic aberration:

"You can imagine the light because the different packages are delivered at different speeds as it propagates in the nanoparillon. We designed the nanoparticles so that all of these packets reach the focal length at the same time and with the same temporal width," said Wei Ting Chen , an associate researcher in SEAS physics and the first author of the paper.

Here's another image that shows photos taken without (left) and (right) the metacorcer. As you can see, the difference is substantial.

I know we are all here, salivaing the perspectives for photographers, but technology has many applications – for example, on high-resolution microscopes where clarity is essential.

And, while Harvard "explores" [commercialisation] opportunities, "I think it will be some time before we filter our plebs.

How to Easily Solve Chromatic Aberration in Photoshop

Chromatic aberration is the unwanted color distortion that you sometimes notice on the edges of the photos. It happens because the colors of the light have different wavelengths, which means that the lens of the camera reflects them slightly differently. Here's a quick solution to offset in Photoshop.

read more

[Harvard SEAS, via PetaPixel]
Source link