When camera lens makers announce new lenses, one of the specs they always tout is how many aspherical elements the lens designs have. If you’re not sure what those elements are and what they do, here’s a short and helpful 4-minute video by Michael the Maven that’ll bring you up to speed. Aspheric lens elements have surfaces that aren’t portions of a sphere, and this more complicated shape focuses light better than a simple lens, reducing various types of aberrations.…