> Higher orders with more coefficients always fit your data better.
> But they are also more unstable.
I totally agree on that. But it does not mean that we should cripple
darktable to do only the common cases. particular for exceptional cases CA
correction is even more important. What polynomials would you suggest for
standard lenses and what type for Scheimpflug (tilt and shift) conditions?
And it would be really awesome if the ca correction could correct for
dispersion caused bij fishtanks or underwater cases ;-)
Best,
Gert
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