gradation: any gradual transition from one color to another or from one shape or volume to another. In drawing, shading created through the gradation of grays can be used to suggest three-dimensional form.
lighting: the deliberate manipulation of light to increase emotional or visual impact through value.
shading: in drawing, a continuous series a grays which are used to suggest three- dimensionality and to create the illusion of light.
value contrast: the relationship between areas of light and dark. General contrast values between joined areas are. Theoretically, between white and black there could be an almost unlimited number of values. When value contrast is minimized, the range of values creates a subtle effect. When the value contrast is high, the effect is more "high-contrast" or dynamic.
Light Source Exercise Look at the ball and how the light hits it, shade the ball on the handout according to what you see. Be sure to add in the shadow that falls on the table and any extra items that might make you picture more interesting.
Spheres are made of two shapes, a crescent and an oval. Depending on the angle of the light hitting it, the sphere is a combination of light crescent (its lit side) and dark oval, or dark crescent (its shadow side) and light oval. Work on creating subtle transitions. Your shading strokes should work with the contour edges of the form - round or curved them to follow the shape or your form will appear to be flat.
Photographer, conservationist; born in San Francisco. A commercial photographer for 30 years, he made visionary photos of western landscapes that were inspired by a boyhood trip to Yosemite. He won three Guggenheim grants to photograph the national parks (1944--58). In 1932, he developed zone exposure to get maximum tonal range from black-and- white film.
1902 - Ansel Easton Adams born on February 20, at 114 Maple Street, San Francisco, the only child of Olive and Charles 1915 - Despises the regimentation of a regular education, and is taken out of school. For that year, his father buys him a season pass to the Panama-Pacific Exposition, which he visits nearly every day. Private tutors provide further instruction. 1916: Family Trip to Yosemite, Californina. 1925: Decides to become a pianist. Buys a grand piano. 1927: First acknowledged photograph. 1940 - Teaches first Yosemite workshop, the U. S. Camera Photographic Forum, in Yosemite with Edward Weston. 1953 he collaborated with Dorothea Lange on a Life commission for a photo essay on the Mormons in Utah In 1962 Adams moved to Carmel, California, where in 1967 he was instrumental in the foundation of the Friends of Photography 1984 - Dies April 22 of heart failure aggravated by cancer