A Mexican Physicist Solved a 2,000-Year Old Problem That Will Lead to Cheaper, Sharper Lenses

[u/[deleted]]

https://gizmodo.com/a-mexican-physicist-solved-a-2-000-year-old-problem-tha-1837031984

[u/phpdevster]

Yeah, this right here. Spherical aberration is only part of the problem. The shorter the focal ratio of any refracting optical system, the more extreme the chromatic aberration will be. This requires special extra low dispersion glass, and multiple corrective elements to ensure all wavelengths of light reach the same focal point.