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Re: Reduce/remove chromatic aberration in Apple Color?

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Joseph OwensRe: Reduce/remove chromatic aberration in Apple Color?
by on Jun 11, 2012 at 4:04:21 pm

[Magnus Larsen] "multiple shots with chromatic aberration"

If you are referring to "longitudinal spherical aberrration", which is typically a fault with inferior zoom lenses, the short answer is "no", as the degree of correction needed between the R/G/B channels would depend on the lens itself, meaning that if such a correction was available, it would still have to be custom-tailored to every piece of glass on earth, and variable over the individual lenses' zoom ratio.

You might be able to engineer a fix with a non-linear zoom tree operating independently in each channel (as the amount of aberration depends on wavelength of light as it travels through the optics of the imaging system, and the distance from the center of the lens), but I very much doubt that this is either practical or advisable within COLOR.

You may achieve a down'n'dirty fix by isolating an outer vignette and then simply secondary-desaturating in red and blue.

jPo

You mean "Old Ben"? Ben Kenobi?


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