lateral chromatic aberration

lateral chromatic aberration

[¦lad·ə·rəl krō¦mad·ik ‚ab·ə′rā·shən]
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Stellar images display a small amount of coma and astigmatism in the frame's corners and some minor lateral chromatic aberration as well, but not as much as many wide-angle zoom lenses display when used at full aperture.
In the past, one of the problems with low cost anamorphic lens solutions was color “fringing” that increased toward the edges of the picture and diminished image sharpness, known as lateral chromatic aberration. To correct this irregularity in the image, Panamorph is leading the way with their partners in the home theater projection industry to adopt the new electronic color correction (ECC) projector technology, which Panamorph has patented to work with their anamorphic lenses.
However, the disadvantage of the system is the residual lateral chromatic aberration, which gives slight colour fringes to the edges of bright objects, yet it still yields clear, very bright, needle sharp images in spite of this defect.
Such aberrations include curvature of field, spherical aberration, lateral chromatic aberration, distortion and coma.
There is the problem of lateral chromatic aberration due to the wedge at the outer rim of the objective lens, but this has been reduced to a minimum by having a very long focal length.
The Ramsden eyepiece, consisting of two simple planoconvex lenses, suffers from lateral chromatic aberration characterized by spurious fringes of color around bright objects far from the center of the field.
Longitudinal and lateral chromatic aberrations can cause the axial and lateral position of the focal spot to change as a function of wavelength.
The honour is being conferred upon Panasonic in recognition of the company's development of In-Camera Electronic Compensation for Lateral Chromatic Aberrations in External Lenses.
The optimal placement of low-refraction, low-dispersion UD (ultra-low dispersion) glass corrects for axial and lateral chromatic aberrations to realize exceptional imaging performance without color blurring.
.The lens has minimised axial and lateral chromatic aberrations, coma aberrations and geometric distortion.
It should be noted that these techniques do not correct for other optical defects inherent in short-focal-length telescopes, such as coma or lateral chromatic aberrations. There is much to be gained and very little to lose by changing your darkroom from a chemical-laden closet to a digital-imaging desktop.

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