If you've ever noticed an unsightly colored fringe or halo on objects in your photographs, you've seen chromatic aberration. It's a common problem in photography and can detract from an otherwise good image. Fortunately, there are ways to minimize or even eliminate it, both before you hit the shutter button and after when editing your picture.
What is an aspherical lens and what does it do? Canon has shared a video that explains the problems engineers face in lens design and how the company solved them using aspherical lenses.
Today, DxO launched PureRaw, an application that uses "exclusive technology" to enhance and improve RAW images by removing digital noise and lens flaws, leaving you with a cleaner and more accurate image.
Color fringing in photos is most often due to chromatic aberration, when a camera lens doesn't focus all colors onto the same point. It's a common problem, especially with cheaper lenses, but we may soon be seeing much less of it thanks to a new breakthrough at Harvard.
Canon just released this 3.5-minute video that explains how lenses work. We learn about focal points, spherical aberration, chromatic aberration, and how multiple lens elements are used together for aberration correction.
The Canon 35mm f/1.4L II lens announced back in August 2015 was the first Canon lens to feature the company's new Blue Spectrum Refractive (BR) lens technology, a special lens element that corrects for color fringing.
Photoshop and Lightroom both have built-in tools for dealing with chromatic aberration (AKA color fringing), but in some cases the features don't work as well as you'd hope. In the 8-minute video tutorial above, photographer Steve Perry of Backcountry Gallery shares a quick and easy trick he uses in Photoshop to manually remove fringing from his shots.
When it comes to the world of Nikon and Canon, there seems to be an endless selection of lenses. Recently, the Chinese company Yongnuo has announced that they will be manufacturing lenses for both of these camera giants. Today, we had a chance to play with the company’s latest YN 35mm f/2 lens for Canon EF mount systems. At $120, the lens sounds like a steal compared to its official Canon counterpart, but is it worth even that price?
A team of researchers at Harvard are trying to revolutionize the world of optical lenses. Instead of traditional curved lenses that suffer from various optical flaws, they are working on a completely flat and ultra-thin lens that overcomes age-old problems and pushes optical quality to the limits of the laws of nature.
Tom Hogarty, the Lightroom product manager over at Adobe, has posted a sneak peek at the automatic lens correction technology that will be included in Lightroom 3 and Adobe Camera Raw 6 (included in CS5).