Lens Corrections, a DxO’s expertise
For almost two decades, DxO has actively developed and researched the science of image correction.
60,000 lenses and camera combinations have been analyzed in our laboratories using the
most rigorous scientific methods and the latest state-of-the-art lab equipment.
DxO brings the rigor of science to image-quality testing.
Main Camera Lens Flaws:
Optical vignetting is the darkening effect caused when the brightness or saturation of an image tends to “fall away” towards the edge of an image. Optical vignetting happens because of compromises or flaws in the design of a lens plus the aperture and focal length used.
All lenses produce some level of geometric distortion, but certain types of lenses produce more pronounced distortion than others. Geometric distortions can cause straight lines in a photographed scene to no longer appear straight or parallel to each other.
Chromatic aberrations, also known as “purple fringing”, are the artefacts that can often be seen at the edges of an image, particularly around areas of strong contrast. The phenomenon is caused by the inability of a lens to focus all colors at the same point. The result is the appearance of “fringes” of purple or red colors in contrasting edges of an image.
Even if there is no motion blur in an image, a well-focused photo can still appear blurry because of poor lens sharpness. Even a perfect object with sharp transitions can have with soft edges due to lens blur. Sharpness isn’t always uniform across the whole image, with corners sometimes appearing softer than the rest of the image.
Lens flaws automatic corrections
Why do we need to adapt lens corrections to work with specific camera bodies?
What are the steps needed to correct image flaws?
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