Sam Hallows, 2012, ink drawings, Image Source
These drawings illustrate actual line because they are made of actual, continuous, non-interupting lines that create the shape. The lines make up the entire drawing but we look at it like the object and not a bunch of lines.
Virgin of the Rocks by Leonardo da Vinci,c.1485, oil paint
In this painting, the implied lines are “seen” along the eye sight of the children as well as the yellow furl in the mothers dress. There is no actual line in this area but we imply it based on its surroundings.
Renoir, “Le Dejeuner des Canotiers'” 1881, oil paint – Phillips Collection, Washington
Psychic lines are when the viewers follow the lines that are created through the eyes of the subjects in the piece. In this piece, we follow the eyes of all the characters all around the painting. This adds to the work by making the viewer look at the entire piece.
A schematic line is basically a sketch or pre-drawing. In Da Vinci’s drawings he made his sketches into a work of art. His drawings are a schematic, or mapping, of the human body
Extension lines area those that are used when creating in the beginning of a drawing or work that help to keep everything aligned and in place. This student used extension lines in their work