Can anyone explain the optic differential cause between spherical aberrations and chromatic aberration?
I know chromatic abrasions are caused by misalignment of wavelengths not hitting the sensor the same time which results in color fringing/CA , both axial and lateral, purple and green. APO lenses address this.
I know that’s for spherical aberrations everything is veiled in a blanket of softness, and that there is an inverse relationship with contrast/sharpness and SA. I also know that moving elements ever so slightly can increase or decrease spherical aberrations, but what actually causes SA?
In my experience, SA and CA seem to be linked in that we don’t get one without the other.
Mar 11, 2020 at 02:16 PM
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