17 October 2022

We’re used to modern multi-element, multi-group lenses regarding optics. But it hasn’t always been that way; some of the earliest cameras used only a single element. But this often caused quality issues, so adding a second element limited the effects of chromatic and spherical aberration. The earliest applications of these Achromat lenses were in telescopes that trace back to the 18th Century. But Charles Chevalier’s (a noted name in early photographic optics) creation of his Daguerrotype Achromat lens changed the face of photography in those pioneering days. While Chevalier’s lenses are still sought by modern wet and dry plate photographers for us who shoot film,Read More →