Lithography is a planographic method of printing originally based on the immiscibility of oil and water. The printing is from a stone or a metal plate with a smooth surface. It was invented in 1796 by the German author and actor Alois Senefelder and was initially used mostly for musical scores and maps. Lithography can be used to print text or images onto paper or other suitable material. A lithograph is something printed by lithography, but this term is only used for fine art prints and some other, mostly older, types of printed matter, not for those made by modern commercial lithography.
A lithograph of Charles Marion Russell's The Custer Fight (1903), with the range of tones fading toward the edges
This very early colour lithograph from 1835 uses large washes of orange and cyan with black ink providing the details.
A lithographer at work, 1880
Lithography machine in Bibliotheca Alexandrina
Mezzotint is a monochrome printmaking process of the intaglio family. It was the first printing process that yielded half-tones without using line- or dot-based techniques like hatching, cross-hatching or stipple. Mezzotint achieves tonality by roughening a metal plate with thousands of little dots made by a metal tool with small teeth, called a "rocker". In printing, the tiny pits in the plate retain the ink when the face of the plate is wiped clean. This technique can achieve a high level of quality and richness in the print, and produce a furniture print which is large and bold enough to be framed and hung effectively in a room.
Ludwig von Siegen, Countess Amalie Elisabeth of Hanau-Münzenberg, 1642, is the first known mezzotint, using the light to dark method.
Shirley Jones, 'Eternity', Terra Contigua (2009)
Early mezzotint by Wallerant Vaillant, Siegen's assistant or tutor. Young man reading, with statue of Cupid. Probably made using light to dark technique. 27.5 cm × 21.3 cm (10+13⁄16 in × 8+3⁄8 in)