Would you get better results from a higher resolution camera?
Speaking of chromatic aberration, are there some sort of filters one could apply to filter that noise out?
What about some sort of lens to pre-filter instead of post-processing?
b1tr0t: Speaking of chromatic aberration, are there some sort of filters one could apply to filter that noise out?
Yes, that is pretty much how Hubble was fixed. It isn't necessarily something you would be able to do in Photoshop, but if you are reasonably handy with a modern programming language, you should be able to write a filter that fixes images for your camera. Some calibration will be required.
b1tr0t: More expensive lenses have more elements. The extra elements aren't there to drive up price, they are there to correct the image under various failure modes of the simpler version of the lens.
Chromatic aberration means that the red, yellow, green, blue, and indigo portions of the image cannot all be in focus at the same time, and may even be slightly offset from each other (at least, that's a reasonable layman's explanation). No filter can fix this.
They don't correct failure modes; they keep the image in good focus over a wider range of inputs: sharper at the corners, or when fully opened up (such as at f/2.0 or less), or with lower aberrations that degrade sharpness in more complex ways.
b1tr0t: Chromatic aberration is just another way of saying that the focus problem is frequency dependent. It is very easy to transform a signal into the frequency domain and apply frequency-specific filtering digitally.
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