Chromatic aberrations

Chromatic aberrations visible at wide angle or maximum apertures Vignetting at wide angle and maximum aperture Moderate barrel distortion at wide angle Rotated CCD (in the camera I had for review) ...

Chromatic Aberrations Also known as "purple fringing". It occurs from an optical point of view, and it depends on how you shoot and if your careful or not.

Chromatic aberrations are reduced by using elements made of different varieties of glass.

Correct chromatic aberrations, vignetting, minor distortion. Correct anything that was not fully handled in raw conversion. Color Mode ...

Color quality and chromatic aberrations Image distortion Vignetting (light fall-off toward the edges of an image) Susceptibility to camera lens flare ...

If you have ever looked through cheap children's binoculars the effect of chromatic aberrations will be all too familiar to you. This 'purple fringing' can sometimes be found on digital cameras as well.

There are higher order chromatic aberrations, such as the dependence of magnification on color. Chromatic aberration is compensated by using a lens made out of materials carefully designed to cancel out chromatic aberrations.

Q: What is the error margin for chromatic aberrations ? The CA error margin of the testing procedure isn't really relevant - the main problem are the CA variations of the lens itself. Look for corresponding comments in the text.

The drawback is a loss in dynamic range of the image and the dreaded purple fringing (sometimes erroneously referred to as "Chromatic Aberrations") of overexposed portions of the image.

Apochromatic (APO lens) Lens corrected for chromatic aberrations in all three primary colours. Many manufactures use different names (i.e. NIKON use ED) ...

of backlit subjects such as plants, people, and buildings. Chromatic aberrations occur when the camera lens can't focus the different wavelengths of light onto the same spot on the image.

If the photographer is the proper distance from his subject, he can minimize possible light and chromatic aberrations.

That’s as far as I go if I plan on working the image in PS. Otherwise I might make curves adjustments, sharpening and noise adjustments. Occasionally I run into vignetting or chromatic aberrations that benefit from the lens adjustment tab but ...

Unless it’s blatantly obvious, I don’t comment much about vignetting, chromatic aberrations, coma, and other things that consume some reviewers. The final criterion is does the lens provide the results I desire?

very extreme exposures (very bright edge against a virtually black edge) and is typically visible as either a vertical streak or white halo extending for several pixels. The effects of blooming often amplify the visibility of chromatic aberrations.

They are designed to be free of chromatic aberrations; that is, they focus sharply all three primary colors in the same plane. Apochromatic lenses must be used for critical work in color copying and duplication.

See also: Aberration, Aberrations, Chromatic aberration, Camera, Chroma